rivarossi couplers

I have an AHM 2-8-4 Berkshire made by rivarossi I would like to convert it to the old style of couplers i.e marklin typle.

http://www.tycoforums.com/tyco/forum/topic.asp?TOPIC_ID=

The link here has a picture of what i requre . Can anyone point me to where i can buy one

That’s some type of European hook-and-loop coupler. The “NEM” coupler has been used over there for maybe 40 years so I’m guessing that coupler must go back to the fifties or sixties??

Not sure how you’d find them, maybe do a search on Marklin and try to find some collectors who have a few of the old old style couplers??