Campag Headset id

After having just pulled my headset out, the bottom cup and race are all pitted and therfore in need of replacement. I have been loooking on egay in the states and have found a few Campy ones, but cant quite work out which one i am after.
The current one is what i believe to be the original one that came with the bike and is italian threaded with ‘Campagnolo patent italy’ stamped on both nuts, with italian thread and no stamps on either cup. bike is of late 80’s vintage.
Any ideas as to what model this headset is would be sweet, as i am looking to get it running again asap.


a pictar would go a long way here…