Maker Christopher Gerock (17xx-18xx)
Dated/City c.1827-1837*  / London
Key/Pitch (MHz) 8 keys Clarinet in Bb
Descriptions Boxwood, Ivory ferrules, eight brass keys* with round key covers,  springs attached to keys mounted in blocks.
Full Marking
  • ” (unicorn head) / C·GEROCK / 79 / CORNHILL / LONDON  / B ” :  upper joint, bell
Additional Markings
  • ” (unicorn head) / C·GEROCK / LONDON ” :  middle joint, lower joint
Length   660 mm. / 600 mm. (without mouthpiece)
Note: *date based on the address marking on the bell

*missing Eb/Bb key