Nee help to Identify stamp
I need some help with this stamp that I recently acquired in a small collection. If it had perfs, I would say it is a SC 156 because it has what appears to be a very light crescent in the pearl at the left of the numeral "1". the paper is a bit more yellow than the white paper of another stamp that is a SC156. Can anyone offer me an opinion as to what I might have?