Inheritance...Help Please

[timolocus]

This is my first post here, and I desperately need help from those that have far much more experience than I.

Recently I decided it would be a worth while skill to learn the art of straight razor shaving, and in response my grandfather provided me with a bag of stuff (quite literally, I received the following in a gray plastic bag):

(Attachments below)

Razor 1. Larger Cream Handled Razor. The Blade itself says "INOSSIDABLE" and beneath that (in all caps as well) "acciajo speciale nissimo" (?). I have some trouble telling, but I think that it may be Italian(?) On the shank of the razor there is the number 12 and the word "Solingen". I have been able to find that "acciaio inossidabile" is italian for "stainless steel", but the spelling on the razor is most definitely a-c-c-i-a-j-o" as opposed to "a-c-c-i-a-i-o".

Razor 2. Much Smaller Cream Handled Razor. The razor has a chip at the front of the blade which, obviously, is a bad thing. The handle has detailing of a crane eating a fish. One side of the shank says "Wyeth's Warranted Cutlery", the other side of the shank says "H.B & Co." with "Germany" beneath that.

Razor 3. Smallest of the 3 razors (red handle). The razor seems to be in the best shape of the three. The handle seems to be a faux wood. The shank says "S.D. Shaw B.S. Co." The reverse side of the shank reads "wichita kas." (obviously for Wichita, KS), but strangely beneath that reads "Germany".

I grouped all of the razors with my Zippo for scale.

I also received a sharpening stone (Ka-Bar brand, also the case for the stone has 1358), but am uncertain if it is appropriate for use with straight razors.

Lastly I received a strop (one side is labeled "Honing" and the other "Finish". I am honestly uncertain if the strop can/should be used, or if I should just go get a new one. The strop is not in the worst shape, but obviously pretty old (much like the well worn, but still very soft, leather belts you might see at the Goodwill Store). The strop is labeled "Simmone Hardware Co. K80 EC Simmons Keen Kutter". Both sides feel like soft leather.

What I am wanting to know is if these razors would be worth using? Does anyone know the history of any of the companies that may have made these?

Also I am hoping for opinions on whether or not the sharpening stone and/or strop should be used.

Thanks for any all feedback.