LATE USE OF MILEAGE MARKS; Pair with 29 July 1841 EL to Dingwall franked 1d red tied by MX with "POOL-EWE/703-E" mileage mark and "DINGWALL" single-arc d.s.on front; rare with only two others recorded by Rockoff and Jackson and 1853 1d pink env. to Ballindoch with MX cancel and "LYNWILG S.O./688-E" mileage mark on rear flap. Unusual pair. (2 covers) Cross Reference: 1840s CANCELLATIONS, POSTAL STATIONERY, QV (Image)