Subject: Re: Wanted: instruction book / owner's manual for DB 3-Litre
Hello and welcome to the forum.
Original DB 3 litre items come up on eBay pretty regularly. Sometimes the price sought is daft but you can always try negotiating, naturally. Expect to pay well north of £100 for one in fair condition and perhaps £300+ for a mint example these days. They also crop up occasionally at auction e.g. I picked up an unused/unissued 2.6 manual at the Bonhams Newport Pagnell auction a few years back.
Good luck.
Tim