80 pp. - colour ill. - softbound - 7th ed. 2021
Italian text

CATALOGUE OF POSTAGE STAMPS WITH WATERMARK LETTERS OF KINGDOM - R.S.I. - REGENCY
VII edition

By Associazione Filatelia Italiana Specializzata

All the stamps known to the authors are catalogued, with evaluations for both unused and used, including, where present, postal envelopes (B.L.P.), express, advertising stamps, parcel post, air mail, military mail, pneumatic mail, war propaganda, authorized delivery, postage-due labels, money order stamp, service, air service.