997X KEY BLANK
Manufactured by Independent Lock Co, Orig. by YALE
IGNITION KEY, although sometimes used as a TRANSMISSION LOCK KEY, as well. Note backside bears the stamp of an old locksmith, "A. Trautz".
LINCOLN: 1925-1932 Model K and Model L Ignition (Key code series K 501-750 or LM 501-750 stamped on key bezel)
BUICK: DELCO Dimmer Ignition Switch approx.1920-1925 (key code series K1501-2000), possibly a Transmission lock key as well.
NASH: 1920's Models with Key code K1501-2000.
CHRYSLER: 1920's Models with key code MC 4151-4400
CHRYSLER IMPERIAL 80: 1920's Models with key code WW151-1000
MARMON: 1929-1934
PACKARD: 1917-1927, Ignition. Key code series unknown.
PIERCE ARROW: "M" code series 1925 through 1933 Ignition, Door, & Tire (also used a "PR" code series which used a different 01122R blank)
STUDEBAKER: Early 1920's, some models, key code series unknown. Trans lock?
STEPHENS: 1923 Series 20 Model 27 passenger Sedan (and possible other similars years/models of Stephens)
ROLLS ROYCE & BENTLEY: Some models, 1920-1937, key code series unknown.
It is fairly well documented that LINCOLN used this key as their ignition key during a stretch from 1925 through 1932. It is unclear if it also worked on doors or transmission locks. The connection to Packard in the 1920's seems to be confirmed as well. Buick used it for transmission locks. Pierce Arrow used it for Ignitions 1925 through 1933. Marmon made a logo key with this keyway from 1929-1934.
This was a master blank for some pre-WWII Rolls Royce and Bentley vehicles from approx. 1920 through the mid 1930's. It is a direct replacement for any key with the part numbers 997X, 997DB, or Y-5. Yale has traditionally been the key maker for Rolls/Bentley. My apologies to the pre-1940's Rolls owners....ebay doesn't list ANY Rolls models prior to 1940 (!) in their compatibility tables so I could not include them. Please note Rolls/Bentley also used a more commonly used 62JB key during this time that is similar....see my ebay store for that one. There was also a YL5 key so use caution, or send pictures!
The connection to the other manufacturers such as Studebaker, Nash, Chrysler, Imperial, Paige-Detroit, Oakes, and others could not be confirmed from more than one source, and I usually try to double confirm my info, but in this case, its just not possible. If you have a 1920's vehicle from these makes, send me a pic of your keys and I can help.
Check my other auctions as I will be putting up lots more interesting classic keys in the upcoming days! I am a collector who purchases vintage lots of keys. If you have anything special available, I would love to hear from you. Please ask questions and look closely at both front and back grooves on the pictured key prior to bid as I want you to be happy with your purchase.
Thanks for looking and HAPPY MOTORING!