I have this coin. It weighs 0.57 grams and is 17mm in diameter and is, at least, gold colored. The Accession Year seems to be 1222 but the Regnal Year is 78! I think the mint name is supposed to be above the Accession Year but I cannot match it to any of those in the SCWC. Any help would be greatly appreciated.
All these strange characteristics (such as the hole, the poor artwork, the impossible years and the illegible mint name) are classic symptoms of an imitation coin, made for jewellery purposes. Women in many Middle Eastern cultures traditionally adorn themselves with gold coins for festive occasions (weddings etc). Poorer women still want to look the part, so these realistic-looking-at-first-glance imitations were made to fill the demand.
Such imitations normally aren't made of gold. After all, if a girl could afford real gold, she might as well buy real gold coins. Given the black stains on this piece, I suspect it's brass rather than actual gold.
The mint-name in this case I believe is a very degenerated "Constantinople".
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
Know this is an old topic but- Exact same token (1223/78) is on offer on ebay (item number 160659434764). Labelled an islamic gold coin rare . Interestingly the description says 1 gramme which is alot more than numismatist6 token (.57g)