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One Ten-Position Relay Box with Selector Mechanism but no contact banks

One Ten-Position Relay Box with Selector Mechanism but no contact banks

1970
Two 10-Position Relay Boxes with covers marked "Manual Alarms" and "Finder CCT", c. 1970

Two 10-Position Relay Boxes with covers marked "Manual Alarms" and "Finder CCT"

1970
Three 18-Position Relay boxes with covers, c. 1970

Three 18-Position Relay boxes with covers

1970