Need help with year of Gold-en girl Cola button

[malibujeol]

I have a Gold-en girl cola metal botle cap sign that is 36" across.
I am trying to find out what year these signs were produced and a value.
I know it came out of San Fransisco and was told it was attached to a trolley at one time.
Any information is greatly appreciated!
Thank you.
-Joel

[Rauville]

Golden Girl Cola was one of the brands that Sun Drop Cola used. I'm guessing the year would be near the "60" code that your sign is marked with...1960, or close to it. The value might be around the $200 mark on a good day. Soda collectors have a passion for those "cap signs" at times.