Help - 1655 Dial Question ~ Did I make a bad purchase?

[pierson]

Ok, so I just bought this 6m serial number 1655. The seller admitted that the second hand is wrong (should have the dot), but stated that the dial is original.

In my (extremely) amateur research, this looks like a Mk2 Dial (“T SWISS T”, without rail lettering), but I also read that those dials are for earlier models up to 5.5m serial...

Am I ok? Or should I be questioning my purchase (well reviewed seller).

Thanks in advance for the help! Love this community