Can you help to identify these frames, bikes or parts?

The seatpost is a 3ttt with a 26 mm. diameter, does that say anything? I'll try to look into the placement of that weird serial number 063-3.

Do you mean this with the bottom cable guide, if so, it goes over:
http://img407.imageshack.us/img407/1529/1090339.jpg

Thanks for the help!

^ Yep, 26.0 is pretty significant - it means the bike does not have 28.6mm OD tubing.

If the OD of the tubes is perhaps 28.0, and it's a plain gauge tube at 0.9mm wall thickness that would be a nominal 26.2mm ID so allowing for eccentricity a 26.0mm seatpost would fit.

28.0mm tubing tends to be referred to as "French"... Most columbus frames were 28.6, but Vitus were typically 28.0, as was the 531 for the french market.

The only other bikes I've seen 26.0 seatposts on are Japanese - I had a centurion with a 26.0 post - made from plain gauge Tange tubing.

There are obviously exceptions, today I'm riding a Cliff Shrubb track bike with a 26.0mm seatpost - Some UK frame builders used Vitus tubing and some used french 531.

Well we've both learned something. I asked about the seatpost diameter, because it can be an indication of the quality of the tubeset: higher end tubes (531c, SLX etc) tend to be 27.2mm or 27.0mm.

I didn't know about French tubes at all.

Yes I was asking about the bottom bracket guide: putting it under the BB indicates a later (+1980s) frame. I'm not sure I've seen a band-on guide before, but it reinforces my hunch that it is a 70's or earlier frame. I don't know if OTT band-on guides were contemporary with OTT braze-on guides, or even earlier.

All in all, it seems you have something that is rather interesting and quite nice: keep digging!