Lot 1242
GB SG829-X882 1971 Laboratory report

Important Great Britain, Including the Steve McGill Grand Prix collection of Machins | S26002
Auction: 11 February 2026 10:30 GMT
Description
1971 Laboratory report dated 7 MAY 1971, produced by Aubrey D. Walker (Chief Chemist of the Post Office) Sheet 4 of 16, bearing 14 imperf and perforated values from ½p to 10p all treated by ‘’ethyl acetate'', each bearing “MATERIAL SECTION, STUDD STREET/ISLINGTON N.1.” h/s in violet, a fascinating piece and unique. SG 829-X882
Footnote
Offered with photocopies of the original report findings.

