Remember that a lot of things happen to a drum in 50 years. For example, that style bottom hoop did not even exist until 1973-4. Most likely: drum was bumped or dropped, bottom hoop was bent and replaced, somewhere along the way. And the owner doesn't remember. It happens.

Unless he had a time machine to go into the future from 1966, impossible for the drum to have left the plant with that hoop.

Also, for someone who is actively going to use the drum, the 'D' throwoff makes a difference. There is a small change inside the throwoff that keeps the throw from going to the 'off' position accidentally while being played. This is because the Dyna snare frame does not ride tightly against the head. The snare wires on a regular drum are applied much more tightly and that extra tension helps keep the 'non-D' throwoff in the 'on' position.

Yeah I definitely understand how he could have a mix-up. He's actually determined now to figure that out and see what happened. So just out of pure curiosity he wants to straighten things out.

And I did notice that when I used it that the throw off would disengage while I'm playing and I just figured it was just because I may have bumped it, but thanks for that info.

I'm looking to date my Dynasonic serial # 22394

Any information would be appreciated.

It's a 5 line with oval badge.

Thanks in advance.

The 380 should be late 60's.. Made by Yamaha and is a quality drum... If you go into search mode you will find several threads on the forum about them...

Cheers

John

My COB Dynasonic #23000 (cool, right?) has D throw off. What's that make it, '69-'70??

Correct.

A nice round number too!