Hello there, I am a native Indonesian and I want to tell you guys about kinds of coins that you can easily get in Indonesian e-commerce (+ their price range in USD).
I hope that this small list will help you with your collection (:
-The price range is relatable if you buy it from Indonesia. It's also worth to mention that these prices are rough estimates, it's very likely that you might find it a little bit cheaper or more expensive. But mostly, you will find it within the price range.
-Avoid any sellers who sell their coins as "mahar" (meaning dowry; wedding gifts), the price is totally not in your favor.
-Avoid any sellers who sell their coins with names [e.g. "koin naga" (meaning "dragon coin") to describe coins with dragon design or "koin ratu" (meaning "queen coin") to describe coins with queen design on it] without explicitly adding its proper denominations, especially on silver coins. They might be selling replicas and fake coins.
-Lots of dutch silver coins that are available in Indonesia are coins from Queen Wilhelmina era. Expect the price from earlier reign (Willem III and Willem II) to be 50%-75% more expensive and 200%-$400% more expensive for Willem I coins. Use this assumption except when stated otherwise.
-Buying generic silver bullion in Indonesia is not a good idea, most of the time. The premium is quite high here. If you want to stack more and don't care about the purity of the silver, I recommend you to buy silver fractional gulden. Even though they are only 72% fine, lots of them are being sold for melt value, some of them are even lower than that.
-English is not my first language, so I apologize for any error that you might find while reading this (:
1. Well, the pandemic in Indonesia is not improving that well. I think it is a big no no to go to coin shops directly instead of ordering it online.
2. Most of the time, e-commerce sites in Indonesia (such as Tokopedia, Shopee, Bukalapak etc) offer numerous free delivery coupons (especially when you're in Java). So you're basically buying it for what it is without any added fees (tax and stuff is handled by the seller, you only need to pay the price of what you buy). Be warned though, one of them (Tokopedia) got their data breached in 2020.
3. Some delivery services are terrifyingly quick even though they are cheap - or even free. Of course, this only happens if you're in Jakarta Metropolitan Area. I'd once bought a coin at 3 p.m. and got it delivered at 10 a.m. (Note: the shop was not that far though, the distance was like ~120km or ~75.6 miles) for free.
4. It's easier to find alternatives when the price is not that good.
5. I have my collection entirely from online shopping. Got duped thrice from a lot of purchases. So... not that bad, i guess?
Why USD instead of IDR?
1. It's easier to write it that way. Indonesian Rupiah is quite inflated (this might be an understatement). Writing 100000 numerous times might be too much to the eyes.
2. It's easier to understand it universally. I assume that some of those who will read this are not Indonesian or unfamiliar with Indonesian currency. Using USD to express its price range might be easier for more people to understand its value.
Why coins instead of paper currency?
I am not that interested with paper currency, unfortunately. Probably you can find it from another user who are interested with it
What do you mean by "easy"?
It means that you don't have to sign any kind of legal papers, notify the authority about your purchases (assuming that you're not planning to bring it out from Indonesia, I have no idea about the export policy here . But, our customs are notorious for being strict to what is GOING IN instead of GOING OUT. So... you know ), it also means that you won't find auction-worthy coins here (even though i've ever seen someone sold a Japanese-occupation 1 sen coin [https://en.numista.com/catalogue/pieces24712.html] online).
Well then, here you go:
1. Circulating coins, obviously.
The price for most of them is its face value, even though some of them might be sold in higher value (Such as aluminum-bronze IDR 500 [https://en.numista.com/catalogue/pieces5673.html] which is sold for $0.2-$1 and bimetallic IDR 1000 [https://en.numista.com/catalogue/pieces7000.html] which is sold for $0.5-$2.
Just a fun fact though, IDR 1 coin [https://en.numista.com/catalogue/pieces3080.html] is still hasn't been demonetized by Bank Indonesia (Central Bank of Indonesia) even though it has no significant value in its face value. You can get it for $0.5-$2.
2. Demonetized coins.
Most of them can be bought for $0.5-$2, you don't need to spend more than that. One exception is 1954 50 Sen (https://en.numista.com/catalogue/pieces7812.html) which might be sold around $2.5-$4.
BEWARE: Fake 50 Sen (Prince Diponegoro) is known to exist. The fakes are not that good though. Why they even exist is beyond me.
3. Riau and Irian Jaya coins.
Coins such as this 1962 1 sen [https://en.numista.com/catalogue/pieces17296.html; https://en.numista.com/catalogue/pieces95951.html]. These are not that easy to find, you can buy it from $4.20-$14 for lower denominations and $10-$35 for higher denominations. Irian Jaya ones are harder to find.
BEWARE: Fake Irian Jaya and Riau coins of ANY DENOMINATION are known to exist. The fakes are not that good though.
4. Copper duit.
The cheapest and easiest to find ones are those that were circulating during Willem I reign (e.g. [https://en.numista.com/catalogue/pieces6562.html]). You can find those that are in poor to good condition for $0.5-$1. Better conditions might make you spend $3-$5 more.
5. Copper keping.
The cheapest ones are Island of Sumatra 1 Keping [https://en.numista.com/catalogue/pieces25032.html] and Singapore Merchants Token 1 Keping [https://en.numista.com/catalogue/pieces48387.html], poor to good ones are sold for $1.7-$3.5, better grades might make you spend $2-$10 more. Island of Sultana is harder to find, especially those with horses instead of lions. Expect to spend $3-$10 more to said prices.
6. Copper/Bronze/Cupro-Nickel Netherlands East Indies coins.
Most of them can be bought for <$0.3 to $1 (for lower denominations, such as VOC duit, 0.5 and 1 cent) and $0.5-$2 (for higher denomination, such as 2.5 and 5 cent) in poor to good condition. You might spend $0.5-$1 more to buy them in better grades.
7. Silver Netherlands East Indies coins (mostly fractional gulden).
1/20 Gulden [https://en.numista.com/catalogue/pieces35523.html] might be sold for $7-$21
1/10 Gulden [https://en.numista.com/catalogue/pieces6564.html] from Wilhelmina reign might be sold for ~$1 in pristine condition. Coins form earlier reign might be 200% to 500% more expensive than that.
1/4 Gulden [https://en.numista.com/catalogue/pieces6565.html] from Wilhelmina reign might be sold for ~$2 in pristine conditions. Coins from earlier reign might be 200% to 500% more expensive than that.
1943 1 Gulden [ https://en.numista.com/catalogue/pieces36509.html] might be sold for $14-$21, depends on grades.
Fun fact: I ever bought 5 grams worth or pure silver for $0.5 just because the seller sold it as "slick fractional gulden coins". So watch out for those gem.
BEWARE: Fake 1/4 and 1/10 Gulden are known to exist (made of mostly tin).
8. Dutch silver coins.
2 Stuivers [e.g. https://en.numista.com/catalogue/pieces36509.html] is around $4.2 - $11
1 Scheepjesschelling [https://en.numista.com/catalogue/pieces17476.html] is around $25-$72, depends on grades
1 Gulden, Dutch Republic [https://en.numista.com/catalogue/pieces96518.html] is around $25-$75, depends on grades
.720 Wilhelmina 1/2 Gulden [https://en.numista.com/catalogue/pieces6549.html] is around $3.5-$5
.945 Wilhelmina 1/2 Gulden [https://en.numista.com/catalogue/pieces16124.html] is around $5-$7
.720 Juliana 1 Gulden [https://en.numista.com/catalogue/pieces737.html] is around $4-$7
.720 Wilhelmina 1 Gulden [https://en.numista.com/catalogue/pieces6070.html] is around $5.6-$9.1
.945 Wilhelmina 1 Gulden [e.g. https://en.numista.com/catalogue/pieces16127.html] is around $13-$21
.720 Juliana 2.5 Gulden [https://en.numista.com/catalogue/pieces4130.html] is around for $7-$9.2
.720 Wilhelmina 2.5 Gulden [https://en.numista.com/catalogue/pieces6551.html] is around $13-$17.5
.945 Wilhelmina 2.5 Gulden [e.g. https://en.numista.com/catalogue/pieces6550.html] is around $24.5-$42
BEWARE: Fake silver gulden coins of ANY DENOMINATION (Including Scheepjesschelling and Dutch Republic Gulden) are known to exist. Some high quality fakes are hard to detect.
9. Majapahit silver massa. [https://en.numista.com/catalogue/pieces223762.html]
They are sold for $4.20-$70. Beware though, faking this particular coin is not that hard.
10. Pitis [e.g. https://en.numista.com/catalogue/pieces149091.html]
They are sold for $0.6-$2. Mostly in the form of Palembang Pitis.
11. Chinese cash [e.g. https://en.numista.com/catalogue/pieces20606.html]
They are sold for $0.5-$2. Mostly come from Song/Northern-southern Song Dynasty. Qing dynasty coins might be a little bit more expensive.
12. Timorese silver escudos
Mostly in the form of 1964 10 Escudos [https://en.numista.com/catalogue/pieces20606.html], it is sold for $5.6-$12.6
13. Straits settlements coins
Mostly in the form of George V 1927 10 Cents [https://en.numista.com/catalogue/pieces4503.html], it is sold for $2.5-$5
These are all that I remember, I hope that it might help or entertain you somehow. I might add more of them in the future~