Can you help to identify these frames, bikes or parts?

Probably a stupid question, but here goes. I have a set of cranks that came with a bike - the ad said "Campagnolo Record Pista". They are clearly Record, and they look like Pista based on google image searches... but how can I be 100% sure? How do Pista differ from road?

With modern (C-Record to current) Campa cranks its easy. Look at the spider around the crank arms. The Pista have 5 distinct arms while the Record strada (C-Record to current) has the 5th arm integrated into the crank arms. The dimensions of the arms are also different. Modern Campa road chainrings are 135mm while track take 144mm OD .

Where it is difficult is pre C-Record as they took at times the same nominal chainring size.