[Heathkit] SB-Series Transmitter Antenna Relay Replacement

[jack m]

Can someone provide me with a source and part number for obtaining a  replacement antenna relay for my SB-401?  The coil opened up.  The relay is a Potter and Brumfield MC-1097-1, dated C-69-17.  Has anyone found a match? I checked Newark and Mouser catalogs, but could only find plug-in styles.  Perhaps the guts of one of these could be used. Has anyone ever tried rewinding one of these?  How does one get the armature/coil off the frame without destroying?? Thanks Jack