Help with identifing SG year

[ggandmisha]

I bought this guitar in 1977 and I'm fairly certain it is a GS Standard and I think it is from 1973->1975. The serial number is #774104 and the numbers that I can read on the pots, there seems to be three of them, are 158500KAT, second number I see is 3770 and a third number appears to be either CBA-811 or C8A-811. Is there any place to find the approximately value of this guitar?

Also, are there directions anywhere on this site about how to put photos in a post .

 

[TNT]

Welcome Ggandmisha! The 3770 that you speak wouldn't possibly have other #'s around it would it? There should be a 137-##-## that corresponds to 137-YY-WW.

As for posting pics http://everythingsg.net/forum/viewtopic.php?t=1457

Hoo boy-- More pics! We love 'em here don't we guys!