Wheel differences

[67-2door]

Hi all.
I've got some of the wheels off my car (1966 saloon) & I've just noticed that one of the rear wheels has a riveted centre while the others are welded. I guess the riveted wheel is a replacement from an earlier car but is it otherwise the same as the other wheels and ok to use on a 1966 car or should I relegate this to spare and put a welded wheel on the car to match the others?
Thanks.

[bmcecosse]

I would indeed use it as spare - with a tube in the tyre.