I believe you have a E1 and it is in great shape and I had to convert my regular E2 to a E1, that is a rare E1 series. Schick had a habit of putting pieces from other model series or transition of models to put product out the factory door for sale. Your E1 is a rare hybrid possibly of model transtion to the new E2 series? @mata_66 made this great timeline reference.
Have some great shaves!
If anyone is interested, the e-bid buy place has at least 4 of the E1s up for sale. They are not identified as E1s, just early Schick razors. I have noticed you need to click on almost every E/G type and look at photos to determine if it is an E and if it is an E1. There are also some E2s there, and alot of E3s. Oh, and a few of the Canadian E/G mixed types. I was just on the site, looking to see if any E5s were around. For some strange reason I got it in my mind I need an E5.
I have a nice E2, but I find the E Series too aggressive....