Year and model ?

[newportcycle]

Mark V 510 post 1991.

That sn makes no sense as those produced then had date codes, not sn.

Yup, looks familar, just like the one in my basement.

[eagleta2]

Regarding serial number stickers...

I bought my father in law's 500 that he upgraded to a 510... and he has since passed.
The problem is the serial number sticker is in poor shape, faded and mostly missing.

Is there some other way to determine the serial number other than the label?

Anything on the inside? Kind of like how a car has vin in multiple places?
I can tell you that it had the security key toggle switch (before I replaced it)

Thanks for the help

Geo