2 VF covers of the 44c-45c multicoloured Walrus & Pronghorn from the 1987-1991 Mammal & Architecture Issue. Single frankings to USA, perf. 14.4.x 13.8 and 13.1. Both covers are in-period.
Unitrade does not give individual cover prices after 1927, but we estimate the value at $30, based on Unitrade's general price of $15 for a single franking to the US.
