All the ex army S3s that I've seen have had their data plates located on the passenger side of the seat box.

__________________
Regards Stuart

174-323 1969 S2A LRPV
175-170 1969 S2A LRPV
178-404 1971 S2A LRPV
172-463 1968 S2A GS/LRPV
178-185 1970 S2A GS
028-867 1976 S3 GS
101-527 1964 No.5 'Norforce' Trailer

REMLR Member No - 209