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Carabela is a marque belonging to ACER-MEX

cycle appears to be same model as the Windsor Carrera Sport

if you check shell you will likely find it to be 68mm in width but Italian threaded

steerer will be 25.4mm in diameter, BSC threaded but made for .833 size stem
the bicycles came with a Gran Compe brand stem

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while lug pattern resembles NERVEX Professional it is an Agrati one which is sometimes identified as "Bozzi" amongst enthusiasts as it it shown in Bozzi catalogue of 1950




fork crown not shown in photos but wouild expect the Agrati "BRIANZA" pattern N. 000.8038




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