Postmarks:
"MONTREAL L.C. DE 28 1836" in red
"SHIP LETTER DEAL" Robertson type S10 in red recorded 1836-39,
"18 JAN 18 1837" - London in red

Transit time 21 days

The lower panel of the ship letter is 27 mm wide and should properly be type 10a. It was the last Deal ship letter mark to be introduced but an earlier mark is recorded up to 1851.

Rate Markings: -
"PAID 1/-" (Cy.) This is double the special rate from Montreal to the U.S. border
"PAID 37½" (U.S. Cents) double the 150 to 400 miles U.S. rate to the port
"1/4" (Stg) - 8d ship letter and 8d inland postage Deal-London

Montreal was only about 30 miles from the nearest exchange office. The 6d rate was in force from 1818-1837 and was reduced to 4 1/2 Cy in March 1837 when the ferriage charge was dropped elsewhere. The Letter appears to have been charged a single rate in Britain, but a double rate in N. America.