I'm looking for some info on a trumpet. It's a boosey and hawkes imperial trumpet 23 mark 6. From the serial number it's circa 1914 in laquer. I was wondering if anyone could give me any details on them, are there many left around, how much are they worth in good condition. It's pretty banged up and would like to know if it's worth getting a complete overhaul on it. Thanks in advance for any info.