gmouchawar

Hi,

Picked up this frame from ebay. It is the 1st bike for the year N=N+1 :-)
It has been repainted or powder coated and modernized so the component vintage is not that helpful in determining the frame. There is a serial no under the BB and it fits the Centurion format. Starts with M followed by 5 but it it is very faint it could also be a 3.
Some distinguishing features:

1- The rear dropouts are Suntour GS.
2- Wrap around seat stays
3- Long top tubes lugs
4- Seat post is SR Royal 26.8mm

It looks to be chrome plated underneath the paint but not 100% sure of that either.
I suspect its a Semi Pro but the 5 doesn't match.
Here are the pictures. I reach out to the collective wisdom of this forum for the final determination.
If indeed there is chrome under the lugs what is a good way to expose the chrome again.

Thank you for your help.