The Korean War Chinese Pistol type 51 was modeled after this Soviet weapon.
The only observable difference, the finger-grip grooves on the slide being narrow and more numerous than the Soviet models.
During the mid 1920's it was decided to replace the old Nagant revolver with a more modern automatic pistol. For one thing, the complicated firing mechanism of the Nagant revolver was considered not to be worth the effort.
The Tokarev cartridge is a modification of the .30 Mauser cartridge (7.65x25mm), and the Tokarev design is almost a straight copy of the M1911 Browning. The only significant differences are the lack of a safety (apart from a half-cock position), the removable lockwork and that the magazine guide lips are machined into the pistol itself, thus protecting them from the common failure of being chipped, a notable improvement.
The Tokarev was replaced as the standard Soviet sidearm in 1951 by the 9mm Makarov PM pistol, which has fewer moving parts and is more easily and cheaply manufactured, but still with good stopping power.