On 9/10/15 9:23 AM, Mike Stein wrote: > Not very interesting > backside is all-telling. DD12092 is the part number. DD == "Data Display" the display division of CDC they are the form factor that DD used. I picked up a 3291-B display controller manual from Billy Pettit yesteray, and is uses discrete cards in the same shape. cans are Fairchild, circa 72/73