NO, it shouldn't. This is weird. Philly is sort of close to the ocean but not right on. Come to think of it, the stocker did rust a bit more easy I think but only on the rollers after they got wet and the bike sat.
So...the paint is chipping off the chain....or the rust is coming from under the paint???? That is odd. 1500 miles is brand new.
If you clean with kerosene and lube with wax, that's all that should be required. Try not to let it get wet, I guess. Maybe you were stuck with a cheap chain on a brand new bike. Do you see a DID stamp on the side plates?
Here's my chrome plated chain. The rollers are just rollers. Chrome is only on the plates. It's held up perfectly for 8 years.
* Last updated by: Rook on 5/15/2018 @ 9:51 PM *
'08 MIDNIGHT SAPPHIRE BLUE Now Deceased