Isaac Keller (1745- 11 June 1802) | NC Clarinet Collection

Maker	Isaac Keller (1745- 11 June 1802)
Dated/City	c.1780 Strasbourg, worked as MI maker 1765-1802
Key/Pitch	5 keys Clarinet in C / A= 430 MHz*
Descriptions	Boxwood, stock-bell, Ivory ferrules, Five brass keys with flat, square key covers; **springs attached to keys mounted in blocks.
Full Marking	” (angel with 2 straight trumpets, blowing one) / KELLER / (number 1 ) / A STRASBOURG / C / (angel with 2 straight trumpets, blowing one)” : stock bell joint
Additional Marking	” (angel with 2 straight trumpets, blowing one) / KELLER / (number 1) / C ” : upper joint, right hand joint ” C / (number 1 ) ” : barrel
Length	550 mm. (without mouthpiece)
Note:	* reproduction mouthpiece by Michael Hubbert, CA** Keller’s innovative design to install the springs for the E/B, F#/C# keys. Instead of conventional punched-in or screw into the keys, Keller build a “pocket” under the key so spring can be installed and replaced easily by just insert into the “pocket”. This feature only found on clarinets by Keller and Frères Keller, not on Bühner & Keller.