During the weekend, I go over the Isle of Man new KM# numbers and I added them (manually) to Numista. In general, new numbers are all KM#1823 and more - new munbers assigned only to coins for 2024-2025. There is 9 coins from 2024-2025 left without no number assigned (6x 50p variants where the base coin is added but this variant is missing in KM#, same for 1x 5 Pounds; it seems thay forgot about 1x 2 Pounds Dunlop and 1x 2 sovereigns or I was not able to find these coins in Numismaster).
So in general, only 2024 & 2025 seems to be added in Numismater recently but I see some changes for 2023 coins too: for example this coin N#390693 was KM#1755 since December 2023 and now it has assigned also second number: 1809.
The number KM#1757 that was in Dec'2023 assigned to this coin: N#375297 is now assigned to IOM 5 Pounds “Royal Cypher” (coin never existed → it was issued by Guernsey; similar like IOM KM#1756 for 5 Pounds “Imperial State Crown” → issued by Jersey not IOM) and the new number for Numista#375297 is now KM#1808. Some errors happens here.
Also some changes in 2024 50p done (some of early 2024 coins have the numbers assigned already in March 2024): silver versions od D-Day series listed earlier with lerrer “a” at the end of KM are now changed to “b” (and “a” is Copper-nickel with silver plating and gold accents) but not in all cases.
I don't know who is adding the KM# numbers in Numismaster but if anybody who is reading this, feel free to contact me. We can fix some cases :)