Have you looked through the Cinelli Registry?
http://www.cinelliregistry.com/
Perhaps you'll get lucky and it's listed there.
Angel Garcia Long Valley, NJ
Long ago, I purchased a somewhat sad 52cm Cinelli Pista frame from a private seller in Palo Alto. I refurbished the frame with a proper 'orange' paint and gold striping from Alan Vivanco. It had a steel Campag post, Cinelli badged Pista Stem, Cinelli Steel bars, Cinelli Cranks and an inch pitch setup on three piece Gnutti Double sided rear and three piece front. Proper track nuts and so on. The saddle was a Lycett (?) swallow, if I recall correctly.
I sold it to someone in the Palo Alto area and it hung on display in the Wheelsmith downtown store on the south facing wall.
Curious as to how it has fared over the years. Information would be appreciated.
Al Knoll
Sacramento, California