Description
GB 1971 Machin 6½p CB unmounted mint cyl 11 no dot block of 40 with r13/5 mark in ‘6’ SG-listed variety [ref 293-605/l/ak0284]
Machin 6½p CB um cyl 11 no dot block of 40 with r13/5 mark in ‘6’ SG-listed variety
GB 1971 Machin 6½p CB unmounted mint cyl 11 no dot block of 40 with r13/5 mark in ‘6’ SG-listed variety [ref 293-605/l/ak0284]