Looking for some advice / opinions here - and I think that there maybe a few on the forum who could answer this question, especially Gary Nelson.

I picked this up on ebay, when I looked at the auction I thought that this was an early prototype dynasonic snare frame.

When I made the purchase I did not realize that the seller had another of these frames pretty much identical except for the fact that there was a small crack in the other frame (the one I didn't get), but someone else must have thought the samething as me - it too was sold.

So what do you think this is?