Related Clues:
- Like a day in June, according to Lowell
- Not at all ordinary
- Like a sighting of an ivory-billed woodpecker
- Not found in many stamp collections, say
- Awfully bloody
- Board's Franco-German affirmations?
- Like hurricanes in January
- Very, very occasional
- Word that's music to a collector's ears
- Numismatic classification
- Very pink
- Beef order
- Board agreement expressed in two languages
- Description on many eBay listings
- One in a million, e.g