Petitgas

Excellent selection of retro-​styled hats and caps. Fedoras, flat caps; I think I saw a Homburg in the case. Traditional construction: heavy on the wool and felt, with lots of acetate linings.
Chapeaux Petitgas is closed on the weekends, but it’s easily worth a quick lunchtime shopping excursion during the week. Lots of City Sport and Stetson (the Humphrey Bogart models, not the John Wayne). The crushable models are tightly stacked on bookshelves around the main area; the more refined models are in the glass counter display, and in cases behind it.
The owner is exactly who you’d expect to find running the place — helpful, reserved, and mellow — but he has an opinion, and he’ll share it.
Prices mostly ranged from DKK 700 to DKK 2500; I found a nice Harris Tweed flat cap for DKK 750. There’s a stack of DKK 425 peaked caps on the counter, but you _​will_​get cautioned about the inferior workmanship and materials — it’s one of those «opinions.»