Folks, I feel a bit shy about admitting it but you're a friendly crew.
When I see a modern Vespa live, on TV or in pictures, I can't tell a GT from a GTS from an ET. I know, I know, pretty embarassing.
I actually got out some Vespa literature and put the GT and GTS side by side and scratched my head.
What are things I can locate to be able to tell the difference? I'm guessing there are some smaller, subtler things for which I could look.
Thank you for your patience with my novice questions....