Here is a 1974 Atala Record Professional model frameset in original finish. Gives you an opportunity to see how fork may have appeared on your example. Note the serial number of 74A1185 is only a handful later than yours.

ipernity: - by Gus Salmon Decals

Here is a 1974 Atala Special Corsa bicycle. It is nearly identical in the metal to yours yet has less chrome than the model posted above. Also has an adhesive head emblem rather than a metal one affixed with fasteners. Its serial is about four hundreds later than that of your bike.



Zugzwang: 1974 Atala Corsa Special - Campagnolo Nuovo Record: seltenes Sammlerstück aus Italien

[Keep in mind we do not yet know if your frame was sold as Atala or as Lygie.]

The head lugs on your frame are Prugnat model 62/D.





The seat lug is Agrati "CORSA" series. Agrati offered their seat lugs with regular binder ears as seen on your frame or bare, for use with a seat binder collar. They also offered them malaguti style (with plugs for the seat stays) as seen on your frame or plain.

Here is an Agrati "ROMA" pattern lugset showing a malaguti style seat lug without binder ears:



The round hole seen in the underside of your frame's bottom bracket shell was made post manufacture. Likely for the fitment of an injection moulded snap-in gear cable guide. Hole a bit too large for the screw-in type.