47. MAYDATES - A survey of penny blacks, twopenny blues, Mulreadys and Caricatures used during May 1840 by Mike Jackson. A superb copy. (Ref 61520) £40.00

48. GREAT BRITAIN 'LINE-ENGRAVED STAMPS' by F.J. Melville. A copy of his interesting little publication listing British stamps printed circa. 1900/1910, slight damage. (Ref 49047) £5.00

49. THE POSTAGE STAMPS OF GREAT BRITAIN Part One by Seymour & Gardiner-Hill. A fine copy of the 1967 latest edition covering the imperforate line-engraved issues, index accompanies. (Ref 61511) £50.00

50. THE POSTAGE STAMPS OF GREAT BRITAIN Part two (revised edition 1962 - the latest) by Wiggins. Hardback book covering the line-engraved perforated issues. Essential reference. (Ref 61515) £40.00

51. STAMP PERFORATION: THE SOMERSET HOUSE YEARS 1848-1880 by Simpson & Sargent. Fine copy of this very important book on perforation. (Ref 60459) £55.00

52. THE ALPHABETS OF THE BRITISH LINE ENGRAVED STAMPS by Alcock. Fine copy of this excellent and scarce publication with many illustrations including sub-types. (Ref 61918) £75.00

53. COLOUR GUIDE - Shades of die II alphabet III 1856-1864 published by Tonna - a companion to 'the Plating of Alphabet III'. Excellent reference. (Ref 61902) £20.00

54. THE PENNY BLACK 1840-1990 ANNIVERSARY BOOK - Royal Mail Stamps. Good copy of this informative book accompanied by unopened presentation pack containing 1d black reproductions officially produced by the Post Office in 2000. (Ref 61519) £15.00

55. THE DUBLIN FIND by Don Madden and Carl Louis. Fine copy of this fascinating publication - the story behind the discovery in 1899 of large quantities of early GB issues and the intrigue therein. (Ref 54682) £15.00