Ever seen a Feather Instant Safety razor "Service Holder"?

I have never seen these before but i picked some up on a trip in an antique shop...

If these are any value to a collector, make me an offer I have 3 that i would part with unopened in their packages.

Those look like the ones they use in hospitals to shave people before surgery.

Last time I had surgery(broken thumb) recently, I was knocked out when they shaved my arm, so I didn't see the razor... can anyone confirm this.

I was thinking about keeping them and using them when I travel, but already have a travel razor so these are just taking up space