For your consideration is a 1936 C G Conn 40A Professional Jazz Bb Cornet, serial 311xxx, in very good to excellent condition.  This horn has completed a professional refurbishment, to include chem clean, valves and slides reworked, felts and corks replaced, dings and dents repaired and removed as necessary, and hand polished to a soft, silver lustre.
Cosmetically, there is some wear to the silver finish owing to age and use.  Notice the intricate design of the etchings on the bell.  Look closely and you will see the "Pan" figure toward the bottom of the bell. 
The horn plays beautifully in all ranges.  The compression is very good, with no noticeable valve wobble.  Note articulation is distinct, and chromatic slotting is accurate, particularly in the upper register. The valves are quiet and quick and the slides smooth. There is a distinct "pop" when each slide is removed.The following information regarding the Conn 40A Vocabell has been provided by the Conn Loyalist Website:"The 40A is the cornet version of the 40B Connqueror Vocabell trumpet. There are several differences between the 40A and 40B. The 40A is, of course, a cornet and as such it takes a cornet mouthpiece. It also means that the internal bore is different, more conical. There are a few ways to tell a 40A from a 40B without inserting a mouthpiece to see if it fits. The 40B trumpet has a third slide finger ring, below the third slide. The 40A doesn't have a finger ring at all on the third slide. Also, the mouthpiece receiver of the 40A comes out to the bell curve. The mouthpiece receiver on the 40B comes out about an inch beyond the bell curve. The overall length of the 40B is also more than the 40A, but this might be a bit hard to see without comparing the two side by side.
The 40A has a #2 (0.468") bore. It is my understanding that the bore going in to the main tuning slide is 0.459" (#1½), and 0.466" (just shy of a #2) coming out of the main tuning slide. The "official" bore of 0.468" (#2) is measured at the 2nd valve. The 40A was produced between at least 1932 and 1938.
What Conn said in 1933:
Although built in medium bore, this cornet has all the power and breadth of tone found in a larger bore because of the Vocabell. This new principle bell vibrates freely and and in sympathy with the vibrating column of air in the instrument and consequently the tone is purer, clearer and easier to produce than the tone in an instrument with the conventional bell. Delicate broadcasting instruments in the Columbia Broadcasting System Studios show the Vocabell to be superior in all respects to the instrument with the conventional bell with a wire in the rim. The volume is from 12 to 15 decibels greater, the scale is smoother and more even throughout and the tone is clearer and purer. Used by B.A. Rolfe, great cornet virtuoso and radio impressario, and other national stars. Masterpiece, both musically and in modern appearance. Bb and A, springs in bottom of valves."The Vocabell cornet comes with a Laskey 40S mouthpiece and a non-original case in good condition.The asking price very fair, and is much less than some of the other Vocabell 40A horns on Ebay.Good Luck and Happy Bidding!