It is "rare" in the usual sense of the word. Not like the "rare" in the list below.

Robert

==========================
Found this list at:
http://pirsquare.my-place.us/acronyms.html

"Sometimes, words stated in various auctions have special meanings:
Originally by, and thanks to bill.glass

Antique -- My Grandmother used to have one
As-is -- It Is broken
Bidders Must Be Pre-approved -- Email me to get on a scam list
Classic -- Popular last year
Collectible -- I thought it was neat, but don't want it anymore
Expedited Shipping -- I will mail it when I get a round tuit
Good Condition -- Worse than "better" or "best" condition
Lightly Used -- My underweight kids almost destroyed it
Limited edition -- Limited to the number of suckers we can find
Mint -- Nice flavor in juleps
New In Box -- Found it in the closet, behind the Christmas decorations
New -- I Haven't listed this specific widget before
No Refunds -- If you are foolish enough to win, it is yours forever.
Old -- Found It in the attic
Rare -- Listed no oftener than once a week
Retro -- Covered in plastic and price jacked up
Scarce -- I need to get this sold before I misplace it again
Trust Me! Look At My Feedback! -- I know how to win one-cent auctions
Unchecked -- Doesn't work, don't even ask about a refund
Unique -- Only a dozen left
Untested -- Does not work
Vintage -- I Haven’t seen one in a while"