Here we have an odd thing, it says on top of it;-
''The Fulton Co Milwaukee USA, No1 Aermore Exhaust Horn Pat'd''
Basically a 4 chime whistle, my guess run off the exhaust off an infernal combustion engine. Tubes are brass about 1 1/8 dia and nicel plated so my guess is that it is 1920's
Total height is about 15 or 16 inches using my engineers eye. The thread on the bottom looks yankee about 1 1/16 ID probably NPT or sumsuch
Just the thing for you boys to fit on your ERF!
£200 ono.
PM in the first instance please