Na you will only see a Dm ossa on there or a Dm bsa, you would be better prowling the Marks swap meet as a most likly candidate, or ebay , problem is you will have to keep looking for All Dm's as most folks wouldnt no what a Dr 370 was, and usually most fost have no idea how to spot a Dm or what its for any way. YOU Need a bit of luck i think to find one of 10.
I had a big off on the weekend, but when i get normal again ill try to give you sum emails in the US of some shops that might have seen one or no who has. Seems people in the know always remember who had what at some time and thats what you might need luck wise to find a 1 in 10, and its hanging in some blokes shed somewhere cause he just dont want to chuck it out, and just cant around to doing anyting with it. remind me.