To me it looks like you're either trying to scam or have been scammed by someone with a typewriter. If you look at the following cards none have the perfect machine inked 1/1 written in the font your card has.


These are handwritten in pen x/25.


Also a 1/1 as you claim your card is, but this is numbered in pen 1/1.


The mini black printing plates seem to have "1 of 1" printed on them by a machine and in completely different font than your card, including the use of the word of rather than the /


I could be totally wrong here and we'll wait for one of the experts in this thread to confirm. As a lurker of this thread this looks like a very suspicious attempt to sell a regular card that you added 1/1 to yourself. Your brand new registered account doesn't lend any help to this.