Picked this up from a local ebay seller last week. I intended to use it as spares, for a couple of OP155's, that are ongoing projects. I asked the seller where he had acquired it from originally, it came off an old German boat he had, that he was going to do up, but had abandoned the idea. That ties in with a similar stove with pot retaining pins as seen on Ebay Germany. The burners are an unbranded Swedish make, there is no brand name on the tank, although all the furniture does suggest that it is a 535. It was missing its locating pins at either end of the tank. Thanks Den for making me two new ones.