Getzen Identification

[ZGunawardhana]

I've got a getzen with SN KT9345. Engraved on the bell is just Getzen Elkhorn, Wis. U.S.A. Photos Below.

https://photos.app.goo.gl/pHrewfdL8XepcxGd6

[Blabberbucket]

I'm not a Getzen geek by any means, but that looks like a student line 70s/80s 300 series trombone. I have one of those kicking around for the odd parade/outdoor gig/situation where I might want to have a horn in the trunk of my car.