Pack of blank postcards

Surprisingly useful: blank postcards measuring 140x90mm. Imperial sized, ie a more elegant, slimmer size than your average picture postcard. As ever, made by Silvine in the UK. Fifty in a pack. Not just for getting creative with (draw on them! collage! ransom notes!) cheap enough to use for shopping lists and notepaper. With the customary printing: "The address to be written on this side".