1912-15 three registered "Otto Bickel" covers, each franked with 5h, 10h and 25h Prince Johann, various paper varieties, used in combination with Austrian adhesives from Innsbruck, Vaduz and Bregenz, fine-v.f. (Cat No. 1-3,1a-3a,b) (Image)

Est.$500

1912-15 25h dark blue, three different, including unsurfaced paper and ultramarine, n.h. and post office fresh, v.f., scarce, cat. $4325 (Cat No. 3,3a,3b) (Image)

Cat. $4325, Est.$750

1912-15 25h dark blue, imperforate single, also 25h ultramarine, h.r. or l.h., v.f. (Cat No. 3avar, 3b) (Image)

Est.$250