All About Pocket Knives

This auto knife was adopted by the U.S. Military in 1958 and was made by Camillus, Schrade Walden & Logan/Smyth.
Here is a Camillus MC-1 that i have had for some time. It's as new, never used.
When did Camillus stop making these ?
Are these worth much ? or too many in circulation so value is low ?
Ebay cannot be used to check prices for auto knives.
thanks for the help, kj

Camillus stop making these when they closed.

Thanks Vit, so a 50 year run making the MC-1 ! There must be a lot of these 'out there'.
Any idea as to value ?
kj

I bought mint MC-1 in 2014 for $80.

I got mine earlier than 2014 but tang markings are the same. Likely there is no way to tell when during the 1958-2007 time period one of these was made ? Were there any changes to the military specs ? or same from '58 to '07 ?
i think i paid about the same.
kj