cover 7c. on 10c. green variety antique "t" in "cents" cancelled (but not tied) by a faint strike of "B62" on an envelope to U.S.A. with 1891 (23 Mar.) Hong Kong despatch c.d.s. alongside; a little soiled but a scarce cover which shows incorrect use of the 7c. rate which was only to the U.K. after 1st March. S.G. 43a. Photo