1971 Ronal R2 Set

Hi All,
 
  I have a set of 1971 Ronal R2's that have been under my house for about 5 years.
  I emailed Ronal to ask about them. This is What they replied;
 
"
It is a Ronal aftermarket wheel called the R2, one of the first Ronal designs ever made.
The size is 6x14. The marking 7105 might be the production date (may 1971 ??).
That fits together with the very unusual item no 14604.05. Only in a price list from 1971 we were able to find this no.
There are no further details known about this wheel.
The only remark in the list is Alfa (for Alfa Romeo) and we suppose it has a PCD of 4x108.
So we suppose the wheel was made for 4x108 Alfa Romeo cars of that time (Spider??)
"
Does anyone know if they will fit on any Escort? As mentioned above, the size is 6x14 PCD4x108
thanks.