Here is another super duper hard to find plug - the PL-69. This is used to connect the transmitter chest to the receiver chest in the SCR-177 and SCR-188 Signal Corps field sets. This is officially part of CD-138.

Good condition.

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Please do not send payment until you get an invoice - this may take 2 or 3 days. There may be a small handling charge, generally about a dollar. Insurance is optional and extra. I will combine lots for shipping, but only if their ending times are within three days. I generally ship within a week of payment. For complete terms of sale, see MyEbay (the me logo).