Obsolete is a term I don't use unless a chip or token has been "OFFICIALLY DISCONTINUED" by the issuing Casino or the Casino has CLOSED.
Unless the casino has "OFFICIALLY DISCONTINUED"(published a notice that there are only 120 days to redeem chips and tokens) the casino must continue to redeem them for their face value and they may order more identical chips.
A collector may have heard that a certain Chip or Token is no longer available at the cage or machine, but may it may show up later somewhere in a rack or machine due to players returning them after having removed them from the casino.
I "think" it was the Orleans casino who issued their Grand Opening Chips and when they disappeared ordered more.(Chipper's was it this casino?)
I had a problem with the word obsolete so here's what I've done with Silver Premium Gaming Tokens in my price guide.
With all of the fervor in the hobby about whether an item is "OBSOLETE", this author will not attribute this connotation to any item in this guide unless the casino has "CLOSED" or has published an "OFFICIAL DISCONTINUANCE" notice of a specific token. Any token whose casino is still open and the specific tokens are not available currently in a slot machine as usual, will be given the notation "RETIRED". As the author and a collector, I have personal experiences that although a machine has been removed from the casino floor the tokens were still available for purchase at the Casino's Cashier's Cage. Three recent examples (January 96) of this have been found at the Golden Gate, King 8 and Flamingo Hilton Casinos, all had tokens available for sell or trade.
The "Play" column in the database is used to denote whether the tokens are Current, Obsolete or Retired from Play. This section of the database is not guaranteed to be accurate.
The legend for the column is:
C = Current in Play
O = Obsolete Casino is Closed
R = Retired from Play
Due to this note in my guide I only have 27 tokens listed in my guide as "OBSOLETE" and only "ONE" of these tokens were due to and "OFFICIAL DISCONTINUANCE" notice.