I don't have the connector, sorry. But i will mention this one thing, which i thought was kind of odd: i had a BC-669 once, but it was all OD green, and not some hobbyist repaint. It also had the speaker blast protector, which reminded me of the simple carburetor choke on a Puch motorcycle i had owned. I think i sold the 669 maybe two decades ago to that well known collector in Bend, Oregon USA, whose name at the moment eludes me. No one seems to know where his extensive holdings went.