Came across some of these Fischer connectors on eBay, and made up some new data cables, and there are some spares.
As the image these are short adaptor leads, 400mm long, not exact replicas of the original camera cable.
These allow PC access to remote control, set up and download images from an Argus3.
The matching customer software is available on fire-tics.co.uk
Yes it is the same connector as an Argus2, but it does not allow you to do anything that useful.
First offering to forum before eBay (at a higher price). GBP25 each, post included to UK/Europe.
Ask for postage to USA etc.
Drop a PM and I'll advise my paypal account.
Bill