Probably somebody knows if it worth something...

Hi,
I found some record. It's Timex "All-Star Jazz Show"
Recording December 30, 1957 with Louis Armstrong, Duke Ellington , Ella Fitzgerald,Dizzy Gillespie, Brubek.
The record couldn't be made for public sale, so it doesn't have a cover. I have a letter from Timex which explains what is it and why they couldn't make it for sale.
Does anybody know what anything about the record and is it worth something?