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omijay -
you mention in your text that subject frame found as complete machine kitted with Campag NR ensemble
if frame produced for export to the anglophone world would think it likely to have been designed for 27" wheel
have you checked the brake centres with 27" wheels in place
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disturbing thought -
we seem in agreement that at least some of the present braze-ons are likely to be post-manufacture additions
occurs to me that person who performed these changes may have wanted a different than stock seat stay treatment as well; if so, they could have lopped off the top five cms or so of the seat stays and replaced the tops with these plugs
mention the possibility as it would render impossible the chance of finding a match for the frame
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