I bought this new in 1984 (replace my stolen Roberts), first year for the Corsa, only year in this paint (Oyster - pearl white). Not the original groupset, now first generation Shimano 600 SIS (bought in 1986), Bicycle built up by Steve Taylor, mechanic on the ANC-Halfords squad on the 1987 TdeF (he's mentioned in the well-known book, Wide-Eyed and Legless - about the squad in the 87 tour). Other components: Cinelli 1a stem, Cinelli Giro d'Italia bar, Rolls saddle (red suede but faded after 3 + decades and Shimano 105 SLR brake levers. Original seatpin and pedals (although I have Shimano 600 replacements.
Thanks for looking, John.