A Few Questions On Old Islamic Coins

Actually, I just found one of the Hungarian MB numbers:
https://numismaster.com/MC_152842
Searching for Hungary 27 finds it, but Hungary 1509 doesn't even though the coin is listed as being issued in 1509.

Finally, an observation.

Many people who collect "Islamic coins" draw the line at including Indian coins in their collections. The Indian Islamic series is simply too broad, complex, and mixed up with non-Islamic native coinages; Indian coins are thus typically tossed into the "too hard" basket (much like many collectors of mainstream world coins often do), leaving them for the Indian coinage specialists. The Stephen Album book "Checklist of Islamic Coins", for example, specifically excludes them.

Thus, for all practical purposes, Indian coins are "not Islamic" - despite clearly being in Arabic script, making frequent mention of Allah and occasionally quoting from the Qu'ran. If you have an unknown coin with Arabic writing on it, it's OK to call it "Islamic", but if you know they're Indian coins, then it's probably best to call them "Indian", rather than "Islamic", to attract the attention of the correct experts.

Krause were working on a project to produce a catalogue for the period 1501-1600, many coins were given MB# in readyness - but the project never came to fruition and likely never will now the books have been sold to PenguinRandomHouse, while the database has been sold to someone else....!

I forget what MB stands for - it's the initials of someone working on the project I think.

Mughal coppers from 1556 were part of the South Asian book as stated by Bjherbison and there was also a German States Krause 1501 to present released - the rest just sat unloved in the database.