Exactly! Seems we have a winner. Good link! Vetta panto matches. I'd like to know what descriptor Vetta uses for that bird logo. I think there's too much confusion in referring to it as a dove (easy to do with the prevalence of Columbus "Dove" images, and similarity of the "in flight profile " design), when it does not resemble a dove at all. Columbus' "Dove" is a much more general rendering of a bird (due to a more common tail feather spread) than the Vetta design which clearly shows the bifurcated tail most common to swallows and some other species. We know through common knowledge that the Columbus logo is a dove and have somehow transferred that knowledge to that which it does not apply, although "resembling" it and in the same area of discussion. I doubt that we would call the Vetta "Swallow" (I'm sticking with it) a dove, nevermind a Columbus "dove", if found emblazoned on a toaster or toothbrush. Also, it is a bird most appropriate for a racing bike frame maker; lightweight, streamlined, fast, acrobatic, agile, and deft. A very apt symbol for the product. Sorry for the "rant", stepping off my soapbox.

I believe if the tubing is Columbus, that the "Aelle" type may have been used; I don't recall it being an "SL" or "SP" lightweight; will get a weight next month. Does anyone know the seat tube/seat post size for "Aelle". I'm thinking that the frame was 26.8mm (definitely not 27.2) if memory serves me correctly. This frame appears to be an earlier version than those examples shown based solely on braze-ons and/or lack thereof, so tubing may be something else. I don't recall when "Aelle" was introduced.

Thanks too all for the comments and insight! More "mysteries to follow.