I've got a bass clarinet that I'm itching to know the year of manufacturing. I have a collection of Boosey and Hawkes serial numbers from their soprano clarinets, but nowhere on the internet can I find information on their bass clarinets and manufacturing years for them. Here's a little bit of information about my bass clarinet and maybe if you know anything about Boosey and Hawkes you might be able to help me. Serial Number in the 12000 range, hard rubber & nickle plating, wooden original case. Bell is stamped with the Boosey and Hawkes London and Lafleur logo. It also has the single "wire rod" style to cover the low Eb on the bell. My guess would be somewhere between the 50's-60's, but I don't know as much about the production of hard rubber clarinets than I'd like to. Thanks to anyone who might be able to point me in a direction of learning about my horn!