I seemed to be on an automotive streak tonight with the 1982 Hot Wheels Wind Splitter, the 1950s/'60s Ford key, and the key fob - in same hole but no longer attached -with a 1905 Rolls Royce pictured. The bizarre 5" key is not from a car though... the shaft is hollow and the teeth on each side almost look like reverse of the other side. Has the number 121 on it. Some obsolete style of hotel key??