Originally Posted by
Clockwork
The serial number is 442764. It does have a large shank receiver.
That is an appropriate serial number for this horn. It was originally manufactured between Jan 1967 and Jan 1968 (i.e. a 1967 horn). Given the addition of a 1st valve trigger and 3rd valve ring, I can safely say that the receiver was replaced as well, since this horn would have come with a medium shank receiver in 1967.
Adams E3 0.60 Sterling bell - Prototype top sprung valves
Concord Band
Winchendon Winds
Townsend Military Band