There is a diamond-shaped and two round inspection stamps on the lower edge trace side. The is a 50 pin edge connector on the top. "(c) SDS-65" is printed on the top right of the component side in white ink. The lower left edge has 1/4" colored red.
Date
1965 ca.
Identifying Numbers
Other number
126485-D
Bottom edge, component side in black in on white background
