There are lots of items listed in eBay that have 'Rare' in the description. I tend not to include that description in the postings as Rare is pretty much relative.
The one good indication of how rare an item is, is the price that an item sells for. For me, you are getting into the rare territory once you get to $500 and above. This is why I have labels recognizing items that sell for $500 and over $1,000.
This here padlock might be rare. The owner certainly thinks so and has it listed for well over $1,000. That said, I think this is the third time listing it with no buyer so far. Still, you only need one buyer who is willing to pay suck a price to make you a happy seller...
This is a rare "Wells College" 6 lever pancake padlock. The lock rates a 9 on a scale of 3-9, 9 being the rarest in the pancake padlock list. This measures 2 1/4" x 2 1/2" and is in excellent overall condition with very light wear and just a few minor dings. No hammer dents, no prying with a screwdriver. This has at some point I think been cleaned and lacquered. You'll have to look long and hard for a better example. Buyer pays s/i. Paypal payment due within 3 days. Thanks for looking and keep checking back for more listings. BIN or make a offer..I would also consider a trade or partial trade for a good "Rave" or like quality lock.. - eBay (Nov 2011)
This padlock had a 'Buy-it-Now' price of $1,950 (Plus $5.50 Shipping) but so far has no takers.-----