1861 ½s. black on blue unused,

B.P.A. cachet on the reverse.

This Sperati forgery is included in the publication ‘REFERENCE MANUAL OF FORGERIES’ by

Dr Werner M. Bohne (Copy No. 0001). There is a very detailed write-up of the known forgeries, together with examples of the forged stamps, both used and unused, and reprints of the genuine stamps