Covers most of the Low Countries and northeastern France. Set includes various issues of some sheets. Some sheets have series designation A.M.S. M503 (G.S.G.S. 4042).
Extra numbered sheet 2A & 3A and 3B compiled, drawn, and photolithographed by John Bartholomew and Son, Ltd.
Marginal maps: Reliability diagram -- Incidence of grid letters and index to adjoining sheets.
Military grid.
Printing dates vary.
Relief shown by contours at 50 m. intervals, and gradient tints, and spot heights.
Three classes of railways and five classes of roads are shown.