Looks like someone scissored the top and bottom to make it look like it is something different! I can still see the remnants of the perforations
Agree. When identifying stamps, always look for the most likely explanation first. If this is 12.5 perf (which it appears to be), then the Stamp Smarter W/F ID Tool only points to Scott 536, which is a perf 12.5 all around. The very rough edges on the top and bottom very much point to a scissor cut, or perhaps a paper tear using a straight edge ruler.
The right and left perforations also look very wonky to me. I guess there is a chance that it is an imperf stamp that was played with to make it look perforated. In that case, the only flat plate, unwatermarked option is Scott 481.
I guess to help would be a higher resolution scan of the stamp in question, plus showing the perforation gauge match for that stamp.