Need help with injector blades

I just received these blades with a Schick injector that I bought. I was hoping someone could shed some light on how old these might be and if it is okay to shave with them?

 

Look carefully on the ones with on the bottom photo. If there is no rust, they should be good. Stainless Steel.

The one in the middle may be Carbon Steel and I have not had a lot of luck with them.

 

Krona Comfort Edge ; great find. I would happily take one off your hands.

 

Well you can't tell me that they are a good find and then offer to take them off my hands. You should have told me that they were lousy and that you would dispose of them for me.

 

Those blades are junk. I would be happy to take them to the dump for you.

 

That's better, but you still can't have them.

 

shoot!

 

@DEfettish
I think your moniker prevents you from owning the pictured blades. Honor dictates that you send them to @Jayaruh because he was the first to ask. However, if you chose to make examples of them to show the clear superiority of DEs over SEs, then destroying them — though tragic — would also restore your DE honor.

<sigh>
I tried, Jim...

 

Thanks for trying.