It would have been produced somewhere between 1967 and 1970 for the Mk1 Escort or Mk 2 Cortina. Very rare and very desirable engine. I would certainly want it off of you if I had something to put it in.
Something rather special, reputedly of Ford Germany origin probably for the Escort T/C. Only made as an ĎLí block, a meatier casting altogether, with big square main caps, the best basis for a competition engine, and much sought after. Many were used with 81mm bores towards the end of Fordís engine exchange scheme for the 1500cc Cortina, so you know where to look.
Value wise, I have no idea, but concidering the value of the Lotus Cortina or Escort, I would have thought three figures for a rebuilt version.
thanks very much for the info mate much appreciated, think ill just fire it on ebay to see