In 1961 my mother-in-law decided she was going to continue playing in the band as she moved into high school and wanted to upgrade her horn.  She convinced her dad to drive her to Denver together with all the money she'd saved working in his flooring store in Greeley, CO and bought this horn.  She played it in high school, some in college, and occasionally through her adult decades.  Like everything she owned, she took great care of the horn over the years.  In 2020, as she and my father-in-law packed up for a move to Florida, she mentioned she was going to take her cornet to Goodwill unless I wanted it.  I saved it but it has sat in my closet for 3 years and needs to go.Now, about the horn:  I thought it was a trumpet, but my (brief) research indicates it is "Long Cornet" made by Conn in 1955.  It is in great shape.  No dents.  Mostly nickel finish with brass accents.  Serial number 508121.  At some point a plastic protective cover was placed on the outside of the valves and it remains.  All the slides and valves move easily.  I played the trumpet as a kid and pulled it out today and was still able to play a scale -- no issues at all with the valves or horn.  Plenty of issues with my old chops...I thought my m-i-l had bought it new, so my post title originally said "one owner".  But then I found it was made in 1955 and she bought it in 1961.  So I changed it to" two-owner".  But I can't guarantee that.  I suppose it's possible that it sat new on the shelf for 6 years or that there were multiple owners between 1.  Who knows?  I'll ship everything in the photos -- the horn, two original mouthpieces, the original case, a vintage mute and lyre, and the original receipt from the Chas. E. Wells Music Co. dated March 17, 1961.We are planning to drive to Florida after Christmas for my father-in-law's 80th birthday.  I'd love to take them the cash from the sale Grandma's vintage horn.Thanks for reading this long story.  I'm a total novice in the world of old brass instruments so would be more than happy to answer any questions you might have.