[Johnson] Johnson 500 Power Supply RY302 Relay Needed

[Roger Shultz]

I imagine it is unlikely to find one but does anyone have one of the 4 pole 
115 vdc relays identified as RY 302 as is used in the Johnson 500 power 
supply?

I can use a 3 pole and am presently doing so losing only the receive mute 
contacts which can be picked up from a set of external contacts on the coax 
relay, but...I'd like to make it "original" if at all possible.

TNX, Roger, NJ2R