Update on this:
Damien has gone but all is not lost
Contacted Dynamco, based in Perth today and sent them a pic of the Australian made remote which most aussie dealers used in 1996 using a Lintek tx-89 board transmitter.
Spoke to Caleb and sent him a pic of the remote Damien supplied us for $26 five years ago
They do have stock but now they want $75 each for them plus $12 postage.
To get them now you contact Dynamco sales@dynamco.com.au and tell them you want a REM004C remote and attach a picture of the back of the old remotes circuit board so they can code it for you - tell them Caleb said $75 each plus $12 postage
He wanted $85 each but I said there were a few volvo guys looking for them so he dropped it to $75 each. Still almost 3 times the price they were 5 years ago so go figure
They sell the blank cases for $25 each - the key loop on the case has a habit of breaking if you hang 50 keys off it.