When did Boosey-Hawkes put a 4th valve on it's Eb's?
Posted: Thu Mar 24, 2005 12:12 pm
Does anybody know the year? Was it pre-1910?
The Blaikley 3+1 comp system was patented around 1878.
There are one or two comprehensive brass galleries available on the web. Please, have a go there.
Carolus Intheknowicus