Holton French Horn H188 authenticity?
I just bought a "new" H188. It was a display model, and it seems really nice and authentic. But I bought it "open box" and was not able to verify that it was authentic. The lead pipe is marked Holton by LeBlanc, then the symbol, USA H188, but there are no other markings other than the serial number: 689486. It is definitely new and un-played. It also has a little round Holton symbol on the support bar that attaches the lead pipe to the horn.
Since it was a display model, there was no other paper work, and it did not have the original case (came with a very nice case though.)
Does anyone else have a Holton 188 that's similar? Or know a way I can verify authenticity?