diameter of 88 millimeters / can you tell me where I can find such information

Hello,

In the attached file I am sending you a photo of a silver coin from 1902, but the only difference is that this coin has a diameter of 88 millimeters, I cannot find information about this coin on the Internet, can you tell me where I can find such information ?

Original is 39 mm. So you have oversized replica with questionable silver content.

N#8472

Very strange but thanks for the information.
There is a version that before minting the coins, the first two coins were minted in an enlarged size….

If it was real presentation example,  it will be authenticated and in a museum. If somebody is trying to sell it as one of two kind, they are selling you fake.

And how can we determine whether this is a real presentation copy or not ?

maxim30000

And how can we determine whether this is a real presentation copy or not ?

You said that only two exist. Miracles happen only in some books and not in real world.

If piece is real, they are free to get it authenticated at NGC.

Thank you for informations.