Please note that cover condition usually includes normal wear and tear to cover edges, opening tears and some creases and wrinkles. Only exceptional or extreme condition issues will be mentioned. Canadian residents MUST pay applicable GST/HST. _gsrx_vers_632 GS 6.9.8 (632). The item "CANADA 1925 MINT LH SC #CL5 NORTHERN AIR SERVICE SEMI-OFFICIAL AIRMAIL CAT $175" is in sale since Friday, August 11, 2017.This item is in the category "Stamps\Canada\Back of Book". The seller is "eliseot" and is located in Gloucester, Ontario. This item can be shipped worldwide.