This is a dual card cage, with the two units taped together. There are a large number of wire wrap wires spanning both cages. There are 33 cards plugged into sockets on each cage. There are purple extractor handles on each card.
Date
ca. 1975
Manufacturer
Digital Equipment Corporation (DEC)
Identifying Numbers
Other number
64
Interior of the right panel on a metal tag
Other number
H119
On left hand outside of each card cage
Other number
PDP12
On a bright green tag attached to the right side of the unit