Joined: Apr 2008
Posts: 2,638
Likes: 14
From: Maidstone, Kent, England
Bikes: 1970 Holdsworth Mistral, Vitus 979, Colnago Primavera, Corratec Hydracarbon, Massi MegaTeam, 1935 Claud Butler Super Velo, Carrera Virtuoso, Viner, 1953 Claud Butler Silver Jubilee, 1954 Holdsworth Typhoon, 1966 Claud Butler Olympic Road, 1982 Claud
No photos? Without them I'm guessing the holes are vent holes used when the frame is brazed to allow hot gases to escape from inside the tube. The fitting you describe sounds like a chain hook - somewhere to place the chain up temporarily out of the way when removing or replacing the rear wheel. Please post photos, I love looking at these bikes!