That is a Spanish S&W copy, i belive it is of this maker or a very close one. below is a link to the page.
The Orbea was a range of Spanish revolvers produced between 1925 and 1935. The Orbea revolvers were produced in various calibres: .22 Long Rifle, .32-30, 8 mm French Ordnance, 5.56 mm VeloDog and .38 Special, and with various barrel lengths including 122 mm, and with a 6-chamber cylinder
Link: Pistols and Revolvers (O)
Im sure you can take it from here.