Hi Fabian, Welcome to Sailnet!
I really like those little Monty's. But I can't think of any one off hand who has one. Hopefully you'll hear back.
Another possibility is to take a look at the back issues of either Good Old Boat
, or more likely Small Craft Advisor
magazine. Just a year or two ago there was a great article in one of these two about a flotilla of Monty's, WWP's, etc that made a club cruise up in your neck of the woods. If you can find the article, you may be able to identify some local boats/owners. If nothing else, Small Craft Advisor
usually has a few for sale in their classifieds section.
All the best of luck!
P.S. My understanding and strong recommendation is that the best route with these is to purchase a used model that was built by Montgomery rather than ordering new from the other builder.