81221 1871 MAIL HENLEY ON THAMES TO CAMBRIDGE 1D PL.143 (SG43) 'TIME WHEN POSTED' PRINTED ON REAR FLAP.

1871 MAIL HENLEY ON THAMES TO CAMBRIDGE 1D PL.143 (SG43) 'TIME WHEN POSTED' PRINTED ON REAR FLAP. Envelope Henley on Thames to 'Mifs E Newsam, 2 Downing Terrace, Cambridge' with fine 1d pl.143 (SG43) lettered AL cancelled '355' numeral of Henley and on reverse 'HENLEY ON THAMES' date stamp JU 23 71. On reverse flap, very unusual printed image of a clock with posting time 8.50 manually written within, underneath 'TIME WHEN POSTED' imprint. Several tears well clear of clock. Most unusual. (Ref 81221).