A neighbor stopped me last week to tell me that one of my headlights was burned out. Saturday I went to a brand new auto parts store to pick a set up. I would not have been surprised if they told me that they didn't stock them, but when they tried to find something on the computer, nothing showed up for trucks older than 1970.
I joked that likely the only round sealed beam headlamps on the shelf would work. Turns out I was right. We checked on a 1970 Chevrolet and the number matched. Before I installed them I double checked on the internet.
Now the new lamps are installed but I am still a dim bulb.