USSR
The lines in the stamp background are parallel to the top edge of the framework. The Souvenir Sheet background color is grainy, and the embossed lettering is thicker than the Type II.
| Country: | USSR |
| Type: | Postal blocks |
| Series: | All-Union Philatelic Exhibition, 1970, Moscow |
| Nominal: | 20 k |
| Year: | 1970 |
| Material: | Chalk surfaced |
| Size: | 70 x 90 mm |
| Perforation: | Simulated |
| Mintage: | 5,000 |