My Grandfather's Razors

Hi all. When we were cleaning out my Grandfather's house about five years ago, we came across a few of his straight razors. I was looking for some comments on whether or not they're decent enough to use. I checked the newbie list of good and bad and I didn't see any of these listed(Is that bad? lol). Any info on then would be cool too. Thanks!

The top one isn't actually a face razor, I don't think as it was actually my grandma's. She was a hair dresser back in the day. The guard slides off and there's a rectangle blade under there.

The white one is engraved with "allied mfg corp solingen-germany

The third one down is engraved "64 1/2 J A Henckels Source Zwillingwerk"

The bottom one has "aveos" engraved on it.

http://farm3.static.flickr.com/2403/...59d292.jpg?v=0

They sound and look like they'd be worth restoring to use as shavers, henckels are popular around here and you can trust most blades from solingen.