Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2

Canada - Modern Errors

The auction will start in __ days and __ hours

Start price: $250

Buyer's premium:

1989, Flag over Clouds, 39c multicolored, imperforated block of four, appropriate margins all around, full OG, NH, VF, C.v. $1,050, Unitrade C.v. CAD$1,400 as two pairs, Est. $400-$500 , Sc. #1166d