See-through revolver
seen from Saudi Arabia

seen from Germany

seen from Germany

seen from Czechia
seen from France
seen from China
seen from United States
seen from Russia
seen from Germany
seen from China
seen from United States

seen from United States

seen from United States
seen from United States
seen from France
seen from United States

seen from Poland
seen from United States
seen from United States
seen from China
See-through revolver
FN Browning mini-hammerless. Colt made a very similar model.
What you need in your pocket?
Another Prancing Colt
The 32 caliber 1903 pocket hammerless used a simple "blowback" mechanism. There was also a 1903 Colt pocket with a hammer that fired much more robust 38 ACP ammunition from a locked breech.
Baby hammerless revolver comes apart pretty easily
Take down of a Colt Hammerless pistol
A természet állattani és vadászati folyóirat 1897. november via EPA