Tibet First Series, 1912 Plating Notebook, by Frealon Bibbins, 1992, comb bound, 42pp.
A most welcome plating manual notable for its enlarged, clear illustrations of the distinguishing characteristics of each position, and for full color illustrations of sheets of all six values, will prove indispensable, from a limited edition of 150, signed by author and publisher

Highly recommended to anyone who collects the stamps and Postal History of Tibet