The designation S2/62/B1-90 follows the Czechoslovak military's standard nomenclature for its permanent border fortification objects, part of the extensive fortification system built along the borders of the former Czechoslovakia, particularly with West Germany and Austria, during the Cold War. Located in the northern part of Czechia near the Polish border, this specific object is one of many concrete bunkers and pillboxes constructed primarily in the 1950s and 1960s to guard against a potential NATO invasion. The system was largely dismantled after the Cold War, with many structures abandoned or repurposed.
The 'S2' prefix typically denotes a specific type or section within the fortification network. These structures were integrated into a layered defense system with interconnected trenches, minefields, and infantry positions. While the web search results discuss broader Cold War nuclear targeting and arms control treaties, they do not contain specific information about this individual bunker or the Czechoslovak border fortification program. Therefore, details regarding its exact construction date, specific armament, crew complement, or armor thickness cannot be confirmed from the provided sources.