The most valuable 6M's are the early ones with the rolled tone holes and silver finish. Conn 6M's from 1934-1947 had rolled tone holes. The 1948 and later horns had drawn tone holes and these horns are less valuable. After 1954, they did away with the micro tuner neck (although they still had the underslung octave key). 1959 was the last year for the lady engraving. In 1963, they went to stamped sheet metal guards. All 6M's were made in Elkhart, Indiana. Production of professional quality horns ended when MacMillan closed the Elkhart plant around 1970. The 50's 6M's are fantastic horns and still have the famous half-naked lady engraving. They usually sell for considerably less than the earlier horns with the rolled tone holes. I've seen them go for less than $800 on ebay in fairly good condition. Expect to pay around $1200 for an earlier model with rolled tone holes. Anything that you buy from eBay, expect to spend an extra couple hundred dollars to have the sax checked out, cleaned and adjusted. Sometimes pads and corks are needed also. I do agree though, there isn't a sweeter sound than a Conn 6M, and they play so easy! I wouldn't trade mine for a dozen Selmer Mark VI's! Jim

Under the saxophone museum tab, in the upperleft corner of this site.

There is a serial number list that tells you everything you need to know.

 Also pictures. Its like a real museum.

Right here on a saxophone site.

Yours is actually considered in the TRANNY timeframe.

It is actually a very deisired horn.

You dont even have to ask. Its all right here.

Amazing thing this internet. It is here forever.

Like this old feed

Good Luck