MARS

Posumavska Zbrojovka Kohout & Spol. (SPK) took over the Slavia line of pistols in 1935 and produced the same pistol under the MARS trade name.  It is a simplified copy of the Colt .25 of 1908.  Very early examples of this gun were marked PZK rather than MARS--these are quite rare.  Probably less than 1000 PZK pistols were made, but the MARS continued the serial number sequence from the PZK.