Oh, buddy. I sympathize.
Because that’s a parlor rifle. Could easily be made by Flobert, though it doesn’t really matter.
The letters in a circle show a Belgian post-1810 BP proof; the starred Z is an inspector’s mark from after 1924.
.32 or .22 would be my main question, though the two 2s stamped in there probably indicate .22.
Put it in the classifieds. I dare ya.