[Milsurplus] Help finding plug needed

[Military1944 at aol.com]

Help needed to find plug 
 
Hi all, 
 
I am in need of a plug, in line socket really, to match the power plug on  
my Pye 619 transmitter. This is an 18 pin plug, about 1 and 3/8 outer dia 
with a  screw down ring on the outside, like a big version of Larkspur stuff. 
 
Picture of chassis item plug needed for at _www.qsl.net/g4bxd/wanted.htm_ 
(http://www.qsl.net/g4bxd/wanted.htm) 
 
many thanks, Ben G4BXD.