I am such a squirrel that I have great difficulty throwing anything away. I am now getting a bit better at it because I can scan things into the computer and then dispose of the original. Even then there is a bit of me (the old librarian part?) that says the original ephemera should be kept for posterity! By contrast, Mum managed to get her paper keepsakes down to a couple of file folders before she died - and she'd lived a lot longer than I have! Sorting through those folders I came across this card from GB.
I suspect he was about twelve when he gave it to her. I wish my handwriting had been that legible at twelve (or any age!).