I dont use the forums very much and dont know traffic patterns, so this same post is on the trumpet herald. I apologize if this is perhaps considered "double posting"
I own a couple Martin Committees, including the illusive Large Bore.
I happened to see this Ebay listing and am puzzled why such a beat up horn is bidding rather high? Yes, I know the general value, etc. etc. and know that any horn can be brought back, but this horn seems much higher than it should...
1950's Martin Committee Model Trumpet | eBay
It does not have a # 3 large bore marking (has no marking at all, usually meaning the "standard" # 2).
Is there some some other secret tell tale sign that this horn is somewhat special?