These were my original OEM GM keys for my El Camino. 30+ years of wear from being in my pocket and use had made them very thin. I hated the stupid GM decision to have two separate keys, one for the doors, one for the ignition.
I dropped them on the garage floor and the ignition key broke. I got out my spare keys and used them. Soon thereafter, the turn signal switch broke after about 380,000 miles. I had to disassemble the steering column to get the turn signal switch out, and removing the ignition switch is one of the steps. The old switch was very worn, and I could pull the key out with the engine running, so it was overdue for replacement. Taking apart the tilt steering column on a G body GM car is a real challenge. Several special tools needed, and it is a mouse trap to get back together. The old door key was so worn, I had to hold my tongue to the left and wiggle the key just right to open the door. That is not an issue with the new key.
I had already taken the new switch and the key to a local locksmith that actually has a brick and mortar building. He rekeyed the new ignition switch to use the old door key, so after all those years I now just have just one key to operate the El Camino.