Hmm, there doesn't seem to be an obvious (to me, at least) date on the bottom.
http://i.imgur.com/DY4rGPl.jpg
It looks to me like it says:
G286
Duraglas
13.
3 <(•)> 5.
That means it's from 1335, right? [:D]
Oh wow, the deboss is really that old? I guess I can forgive the fading it's got, then, and just say it adds character. ;)
No way to narrow the date further on the aqua bottle? Changed wordings or anything? That's a shame, but at least I know it's no newer than '51 since it has the pyramids...
I just grabbed these bottles for $7 for the pair at a flea market today; thought it sounded like a good deal and I didn't have any RC Cola in my collection yet.
Pics are here:
http://i.imgur.com/7r3YpNp.jpg
http://i.imgur.com/XRY3RkN.jpg
I apologize for not attaching them via the forum...