each signed and inscribed 'AP XIII/XV' in pencil, one of 15 artist's proof copies aside from the edition of 50, further signed and inscribed 'AP XIII/XV' in pencil to the title page, printed by Curwen Prints Ltd., London, published by Raymond Spencer Company Ltd. for the Henry Moore Foundation, Much Hadham, the full sheets, loose (as issued), within the original olive green silk covered portfolio