For age it is in good condition. I took pictures as I flipped through book so you get idea of condition.
GREAT EASTERN RAILWAY 1896. VALVES AND PISTONS. Rare Booklet. Folded.
Diagrams in French Locomotive Valves
HORNBY X1123/24 X515/6 CON RODS AND VALVE GEAR SET FOR R350 A4 CLASS
Hornby X1123/24 X515/6 Con Rods and Valve Gear Set OO Gauge