1840 Gold Ruble not in Numista

Hello everyone!

I found this coin that shouldn't exist based on the images I found here. Please notice the lack of slant of "5" in the image below. According to Numista database, that type of "5" only appears on this coin stating in the year 1846, and it should be slanted (italized) prior to that.



Is this an error in Numista, or is the coin fake? What do you think?

Here are the entries I was able to find:





Thanks!

counterfeit 24k gold-plated coin available on aliexpress for a pound
https://www.ceneo.pl/78933858

Wow. It's being sold on eBay as the real thing, bid up to $300+ at this point.