Who can tell me the era my 16 gauge toz-63 Russian made dubble barrel with external hammers was made?

The TOZ-63 is a Russian-made double-barrel shotgun that was produced by the Tula Arms Plant (TOZ) starting in the early 1960s. If your 16-gauge TOZ-63 has external hammers, it likely dates from the 1960s to the 1980s, as production continued until the late 1990s. To narrow down the exact era, you can check for specific proof marks, serial numbers, or other identifying features on the firearm.