The two keys pictured on the MCP website are indeed for a doorknob and for a GM vehicle's Ignition.
The key to the house doorknob is for a lock made by Schlage. While the police seem to think that it is 10 years old, I can state that I had one exactly like it which opened the origional doorknobs to my house built in 1976. I do not, however, know when those door knobs were made, and they may have been the last of that key type. When I needed to replace the doorknobs in the 1980's, that style was no longer available.
What I can say for certain is that the Schlage was almost always used as a house key on outside doorknobs. I have never seen an inside door or office door keyed with that style of key.
The GM vehicle key is for an ignition cylinder. I believe that GM began using that style of key with the rectangle end sometime in the late 1960's. Before it, they made a key with an octogon shaped end.
The police state that it was for a 1972 model. They may know this because each year, GM changed the long groove location along the side of the key. This meant that you could not put a 1972 key into a 1973 model lock.
By 1972, all GM automobiles (Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac) required TWO keys. The rectangle one (shown on the website) was for the ignition. Oval shaped ones were for the doors and trunks.
A possible exception, however, may have been the Chevy or GMC pick-up truck and possibly the Chevy or GMC van. I have not nailed it down for certain at this point. I know that in 1970, the ignition key also unlocked the doors on the pickup truck (and larger trucks). By 1973 Pickups had two keys - like the cars - one for ignition, and another for doors.
While it is possible that these are the keys of a teenager/young person - there could be another reason as well, such as spare keys, borrowed keys, or just that the guy reduced the amount of keys he was carrying because he was away from his home - such as living with a friend in the DC area. In that case, he would have put his other full ring of keys in his suitcase or briefcase, etc.
The key to the house doorknob is for a lock made by Schlage. While the police seem to think that it is 10 years old, I can state that I had one exactly like it which opened the origional doorknobs to my house built in 1976. I do not, however, know when those door knobs were made, and they may have been the last of that key type. When I needed to replace the doorknobs in the 1980's, that style was no longer available.
What I can say for certain is that the Schlage was almost always used as a house key on outside doorknobs. I have never seen an inside door or office door keyed with that style of key.
The GM vehicle key is for an ignition cylinder. I believe that GM began using that style of key with the rectangle end sometime in the late 1960's. Before it, they made a key with an octogon shaped end.
The police state that it was for a 1972 model. They may know this because each year, GM changed the long groove location along the side of the key. This meant that you could not put a 1972 key into a 1973 model lock.
By 1972, all GM automobiles (Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac) required TWO keys. The rectangle one (shown on the website) was for the ignition. Oval shaped ones were for the doors and trunks.
A possible exception, however, may have been the Chevy or GMC pick-up truck and possibly the Chevy or GMC van. I have not nailed it down for certain at this point. I know that in 1970, the ignition key also unlocked the doors on the pickup truck (and larger trucks). By 1973 Pickups had two keys - like the cars - one for ignition, and another for doors.
While it is possible that these are the keys of a teenager/young person - there could be another reason as well, such as spare keys, borrowed keys, or just that the guy reduced the amount of keys he was carrying because he was away from his home - such as living with a friend in the DC area. In that case, he would have put his other full ring of keys in his suitcase or briefcase, etc.
