My First 15th Century Islamic Coin - Shirvanshahs Of Shemakha

A few weeks ago, I mentioned in the How Far Back Can We Go thread (3rd edition) that 15th century Islamic coins aren't that uncommon - they're just complicated to identify.

At the time, I had no Islamic coins from the 15th century (I did have Islamic coins from the 14th century and from the 16th century, but nothing from the 15th).
However, a few days later, I was lucky enough to stumble on this piece, which appears to be from the 15th century.

A misunderstanding of the attribution led me to believe that this coin might have been eligible for said How Far Back Can We Go thread (which is to say, that it dated to a year corresponding to 1487 AD).
Apparently the actual date is (just barely) off flan. It might - just - still be possible to figure it out relatively narrowly, however (if perhaps not as narrowly as a single year).





As you can kind of see from the third pic, the coin was (and remains) in a 2x2 holder. Thus the awful pic quality.
(But the blank half of the coin is actually blank - it must have been struck really badly.)

Dealer attribution (on the holder): Shirvanshahs, Derbendi, Farrukh-yasar [sic - Zeno calls him Farrukhsiyar], tanga, type of 892 AH, Shemakha mint.
As far as I can tell from Zeno, this looks plausible if nothing else (and just enough of the actual date is visible to suggest 89x).

Hopefully someone will be able to tell what "type of 892 AH" actually means, and whether it is, perhaps, possible to tell the single specific year ideally that year would be (whatever corresponds to) 1487 AD, obviously.

Either way, however, it was probably a fairly good purchase for the equivalent of $7 (the holder shows a slightly higher price, but it was already lowered by the time I got to the shop).


And on an otherwise unrelated tangent - the town of Shemakha is probably best known in relation to the "queen of Shamakha", the main antagonist of Pushkin's Tale of the Golden Cockerel (I've heard somewhere that it is in fact based on an Islamic folk tale, but don't know enough to be any more certain one way or the other).
It is in Azerbaijan today, incidentally.