Hi, those are very nice horns, mostly depending on the condition of the valves. Not much available parts. It is an upper intermediate horn, very similar to my Besson 8-10 from 55. In fact, I am using a set of 2-20 valves in mine as replacements. Somewhere between 67 and 68 would be the build year, according to the list I have. I used to have a Besson 8-10 cornet from about the same time. Valuewise there are a couple on ebay, I think. One has a bid of $51.01 with 2hrs to go. There is a Reserve on that one, a lacquer, virtually identical to mine, except for the spit valves. I see a silver one on ebay with a 380xxx. That the one?
From the description and photos I would pay up to $150-75, other than I already have a good playing Besson very similar.
Now, if I could find a cheap 10-10.....
Hope this helps.
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Dave Rafferty
07 Barrington Trumpet
55 Besson 8-10 trumpet
52-55? Roth by Reynolds Cornet
73 Olds Ambassador Cornet
? Czech small bore Trumpet
Getzen 80 cornet
66 Olds Ambassador Trumpet
www.kalamazooconcertband.org