Are these vintage Sylvania 6L6GC tubes?

I inherited a box of tubes.Included are some new sylvania made in usa 6L6GC(cc asu).Im trying to figure their value but there are many versions of this model with a wide price range.
(Dont know how to post pix here).

wes196603-11-2021 5:35am

2 responses Add your response

dekay Details Discussions Posts This discussion Message User 5,556 posts 03-12-2021 at 05:31pm Copy Comment URL Report Comment Edit Delete There was a special Sylvania 6l6GC version spec’d by Fender many years ago. Later on (early 80’s?) Mesa Boogie spec’d their own 6l6GC, but I’m not certain who manufactured it. Maybe try a guitar site/forum? I checked the Tubemonger tube library (great pics of tubes) but didn’t turn up much on the 6l6GC. DeKay
noromance Details Discussions Posts This discussion Message User 9,769 posts 03-12-2021 at 05:26am Copy Comment URL Report Comment Edit Delete Can't tell without seeing them. You can put photos up on photobucket. Com and link here. 6L6 are not very scarce (except for NOS RCA black plates) so you won't be retiring anytime soon.

Log in to respond

More to discover

Conrad Johnson TEA-1 Series 3 b

Aurorasound AFE-12 MC Step-Up Transformer

McIntosh C45