This Coin
https://en.numista.com/catalogue/pieces12130.html
changed the year successfully from Gregorian 2000 to Islamic 1420 (2000)
however, before that, while it had the value 2000, ive changed the calendar to islamic
and now somehow this value is stuck there while viewing the coin in the search
under the coin name
how is that even possible to have 2 different dates at the same time?