Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hero; here are two pics of the Andy Ross books I have.
 1977 1st Edition is 121 numbered pages . Second Edition 1981 has 122 numbered pages.
 {I’m so far suspecting your #8000 series engine was made around-about latter 1978 early 1979 or so ... just guessulating  )

Back covers —- Top book in pic is 1977 , bottom is JEMCO era 1981 plus

Opening pages —- Left side book in pic is 1977 , right side is JEMCO era 1981 plus