Here’s a bit more info on that cover (auction listing only allow for limited text)Cover with 5d green Declaration to Scotland. Bwagaoia cds (Lee 86) 15 NO38 (odd but standard gap between the ‘3’ and ‘8’. The address looks to be an inked stamp, suggesting a philatelic item (though did go through the post, so a genuine postally used cover). The ‘Albion Works’ presumably was part of Albion Motors, the largest car manufacturer in Scotland, later taken over by Leyland.