The rectangular case and the vertical calendar window earned this watch its nickname: Fridge (холодильник in Russian). This particular specimen, powered by the manual 26-jewels movement #2428, comes in a gold-plated case and has a lovely two-piece pearl/champagne dial.
Model number: 263818
Movement: Slava 2428 (manual)
Lug width: 18mm
Case: 37mm x 42mm, gold-plated case
Period: 1980’s
This model is present in the 1983 catalog:

Below is the description translated from Russian:
Gold-plated case, water-resistant, external surface treated with diamond tool. Case back made of stainless steel. Two-piece dial consisting of a flat, round lower part and a non-round upper frame. The lower part field is vertically-brushed, silver, the upper part field is vertically-brushed, golden color. Marked with twelve hour markers of golden color. Flat hands, golden, with black filling of windows. Second hand is red.
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