These buttons are made by Etsy-seller Retronana who not only sells these lovely buttons, but also a ton of other lovely, lovely stuff! (she's currently on holiday and has closed up shop until she's back, but check out this post on Sarah's blog for some examples)
The buttons I won are HUGE. See, that's a pound lying next to it. (a pound? yes, a pound. I was out of euro's!) Right now, they're propped up on my desk, right underneath my monitor, so I can look at them all day long. I haven't found the perfect project to use them for yet, and I won't, not until my thesis is all done, but I can't wait to start browsing Ravelry for the perfect project!
Thank you Sarah for the lovely giveaway!