Originaly, it was silver and only
given to tank crews. On June 1,
1940, it was expanded to include
other armoured fighting vehicles
and was cast in bronze
On June 22, 1943, higher grades
of this badge were given. 25, 50, 75 and 100.
The number was added to the base to
indicate the number of actions.
This badge was worn on the left breast pocket..
MARKING:   the letter "S" inside a triangle
VALUE = $150 - $250