Related Clues:
- Practically unheard-of
- Book collector's category
- Bloody, so to speak
- Like a collector's item
- Tough to get your hands on
- Barely done, as steak
- Pink inside
- Well-done's opposite, in the kitchen
- ''Cool in the center''
- Hardly spotted
- Label in a bibliophile's catalog
- Like some vinyl or footage
- Like a perfect game
- Collectible adjective
- Steak order with a center like that of 17-, 24-, 38-, 48- and 61-Across