API Material IDs [solved]

According to the documentation you can filter the results by material. I could not find any information documenting what the IDs are. Specifically, I'm wondering what silver and gold are. I could try going through the ids one at a time but I'm hoping someone already has the information. Thanks.

Hi, here is the list.
 

Coins, tokens, medals
1: silver
2: copper-nickel
3: copper
4: brass
5: bronze
6: gold
7: billon
8: nickel
9: steel
10: aluminium bronze
11: zinc
12: nickel silver
13: iron
14: plastic
15: stainless steel
16: nickel brass
17: electrum
18: nordic gold
19: tin
20: wood
21: lead
22: platinum
23: tombac
24: cardboard
25: pewter
26: porcelain
27: zamak
28: manganese brass
30: aluminium-nickel-bronze
32: copper-aluminium
33: potin
34: bakelite
35: titanium
36: copper-nickel-iron
37: bronzital
38: acmonital
39: clay composite
40: tantalum
41: chromium
42: zinc-aluminium
43: resin
44: palladium
45: aluminium
46: copper-aluminium-nickel
47: virenium
48: gilding metal
49: niobium
50: aluminium brass
52: orichalcum
53: nickel-steel
54: aluminium-zinc-bronze
55: nickel-zinc
56: magnesium
57: tin-lead
58: tin brass
59: Florentine bronze
60: fiber
61: tin-zinc
62: leaded copper
63: ceramic
64: glass
65: bronze-nickel
70: rhodium
71: ruthenium
72: other
74: iridium
75: leaded bronze

Banknotes, paper exonumia
66: paper
67: polymer
68: hybrid substrate
69: silk
73: other
 

Thank you!