I'm talking about those old blade dispensers that you use to tuck the blade into the razor head with your thumb, as shown on those old razor commercials. Besides Ebay, could I find one on amazon? Thanks.
Kroger, Dollar General, and CVS sell store brand DE blades that come in pushout dispensers. If they say Made in Israel then they are re-branded Personna blades if they say Made in Korea then they are re-branded Dorco blades.
Not quite "Old" though. If you are looking for the vintage dispensers then I would check local thrift/antique stores. Also besides ebay you can check etsy online.
How old are you looking for? I have a Schick dispenser with a blade or two left in it. I don't know when Schick quit making DE blades though.
Here are some vintage dispensers I got on eBay last May. I read on a forum where you can easily disassemble the Personna ZiPak dispenser and refill it with new blades. So, I decided to do that. One dispenser had only two blades in it, so I removed those and put them in the dispenser with fewer blades. This is the dispenser with just two blades in it. Here I have taken it down to the point where the blades are accessible. Next, I removed the two blades along with the pusher. The dispenser is made up of four parts. From top to bottom: the bottom piece, the spring/used blade holder, the pusher, and the clear red plastic top. Here I have an assortment of blades ready to go back in the dispenser. First, I put the pusher back into the top piece. Step two, I loaded the blades into the top. Step C: the spring goes on top of the blades. Lastly, the back/bottom is attached. Here is the newly reloaded ZiPak dispenser. I have four Wilkies, two Personnas, and a Gillette Rubie ready for use.