Classical oboe after Heinrich Grenser, Dresden ca 1806
A = 430 Hz, 2 brass or pure silver keys. 3 to 5 optional extra keys : C#, F, F#, G#, slur key (octave key).
The original instrument wears the mark of H. GRENSER DRESDEN with a crown which shows that this oboe was made between 1806 and 1813, date of Grenser’s death. This oboe was made as a 2 keyyed instrument ; 5 extra keys were added afterwards : F, F#, G#, A#, C.