Once in awhile Google runs amok with false leads and this is one of those cases.  But it’s all about Robert Burns, and the building here is reputed to be the inn described in one of Burns’s famous poems.  This postcard was mailed in 1978, with stamp and clear postmark (Ayr) and bilingual airmail sticker — but also with two thumbtack holes at the top  (Grade: 5, 0.50) and we somehow have another of the same card, with two 6p stamps, airmail sticker, unreadable postmark — and just one thumbtack hole.  Also Grade: 5 ($0.50).