HP-41 Extended Functions Made Easy Keith Jarett Spiral 1983 HP-41C Book Vintage
White card covers show surface rubbing, scattered small spots, and edge and corner wear, with several punched holes along the spiral margin chipped or worn. Red spiral binding is intact and turns pages normally with the exception of one ring area being broken off from the others and pages are not held by that ring, but this is not significant because all pages are secure.