atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems Chaining 66 blocks with AMP connectors

Ah, perfect.. much thanks, Ed!
With that I found a source that sells new ones for around $100, which which given the time it saves me to not punch it down, is probably worth it.

A vendor titled it a SIEMON 50PR BLOCK 66 BRIDGED, so I'm good.

And in fact, the 66 blocks I have are Siemon's too; they have the nice velcro straps to retain the connector.