7xx stuff 
Relays and a resistor block from an IBM 705. Although the relays look like relays I saw in various unit record machines.
Relays and a resistor block from an IBM 705. Although the relays look like relays I saw in various unit record machines.

'Logic' modules from an IBM 705.
'Logic' modules from an IBM 705.

Diodes
Diodes

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(C)2005-2008 R.C.Bradlee aka PostcardBob