Malay Peninsula is a legacy classification which is kinda stuck around😅 The question is that these coins have ambiguous issuer and range of geographic use while Numista does not allow multiple geopolitical designation.
For the Merchant tokens, it has more documentation that it was produced by British actors and so putting it within British Indies made some sense. But then it is further classified into Sumatra, Sulawesi, Malay peninsula etc which a bit misleading since all of them are use simultaneously across Malaysia and Indonesia afaik.
The tin coin is in the legacy classification. This type of imitation is also found and probably also produced in Indonesia, so “Malay peninsula” is definitely not correct. I am fine with emptying this category altogether but dont know where to reclassify the coins since it is unclear who made them. If we change the name to a more correct, broader term like “Malay archipelago”, then it would be wrong to put that under Malaysia exclusively since the term encompasses Malaysia, Singapore, Indonesia, Brunei and Timor