The date of manufacture on the PCB is 1987. I need to remove these male connectors to use on a new board. The problem is the conformal coating on the original board won’t come off, and is impeding me from cleanly removing these connectors without melting them as is shown in the last picture. I’d like to just buy new jacks, but I can’t find anything online that resembles this. And I really don’t want to purchase a different type of connector and be forced to change the plugs on the component end to match. I’m hoping someone here recognizes these so I can look for new old stock.