How To tell if my 500 is an import

[Davecrook1]

I bought a 500f last weekend but it's in a sorry state. Wrong parts and random nuts and bolts.
So there are a few parts that make me wonder if it was an import. The v5 was an old style one as it's been sat up for a long time.
But rear mudguard looks non uk. Handlebars arent uk ones either.
But either someone's changed it over time or it's an old import.
Anyway of telling? Chassis number ?

[Davecrook1]

Thank you..
  My bike is black. Has the higher bars and doesn't have the seperate headlight switch.  But has the 4 hole mudguard. So it's a bit all over the place

[Woodside]

Didn't us bikes have a vin plate riveted to the frame on the head stock. ..uk didn't?

[Bryanj]

PM me the frame number and I will give you a build date

[Davecrook1]

Pm sent . .
  The chassis number is stamped onto the frame stem same as the normal U.K. Bikes.