From what I've seen the cutaways that come up on Ebay, and elsewhere, are usually prints from the Lotus manual (as #6) or the early Caterham manual. The latter illustration is by Peter Baker who worked for Autocar and did other cutaways, such as the FW08, and I don't think was ever produced as a print. The original cutaway version that does come up for sale occasionally is Shin Yoshikawa's beautiful Lotus S2. There was a run of 100 numbered and signed copies and one of these came up for sale in a set of 6 Lotus drawings, all numbered 35/100, last year. There's an unsigned S2 copy on Ebay from the States at present but I'd want to be certain it's an original. The 16"x20" S2 is noted as in stock at Kai Art in the States who I think still published them (these versions are noted 'Published by Kai' in the bottom right). Hope this helps R