Also posted in Todays Finds.....
Well I'm happy to tell you it's a real gun! It's called a "Flobert" They were European made and date from the late 1800's to around WW1. They didn't fire a regular bullet, but instead a "CB Cap" which was basically a percussion primer with a small conical bullet on it. They were actually intended for indoor target practice rather than as a weapon, sometimes called a "parlor pistol" Yours is a low end version, and I found a reference to them being marketed to bicyclists to fend off dogs!
Look on the barrel for any stampings that could ID what country it's from, yours is likely German or Belgian, but they were made all over Europe. The 24 isn't a caliber, I'm not sure what it means, I doubt it's a serial number as there were thousands made and I've seen a few with 2 digit numbers stamped on them. As far as a value, not much I'm afraid, I've seen one in better condition selling in the 25$ dollar range. It's a really cool find though, and it will look great if you put it in a frame and hang it on the wall.
It's the kind of thing I collect, and if you ever want to part with it let me know I'd be glad to give it a spot on my wall
IMPORTANT- these were also made in .22 short, but intended for blackpowder loads, if you tried to chamber and fire a modern .22 short you COULD be hurt, even a blackpowder load might cause it to blow up, These were not made in the highest of quality, so just let it be a wall hanger, and NEVER try to shoot it