[victoryfactory]

My Atlanta also has the "S" on the Bottom Bracket casting, visible from
above.
Your bike looks like it has the chain hanger which was stock on Atlanta.
Custom Atlantas could be ordered without the tubing decals and American
flag logo on the seat tube but the placement of the chainstay decal indicates
a possible repaint as noted by Dave Thompson

I can't imagine anyone would bother to swage the down tube and seat tube
just to counterfeit a Serotta. It has to be real IMO.

Interesting side note: My Atlanta has a similar paint scheme
with the fade in the opposite direction! (Original paint MY2000)

VF