Public auction #42 on

1911. Petar 10 p pojedinacna proba horizontalnog peterca u plavoj boji sa originalnog klišea, na tanjem toniranom papiru 136 x 48 mm, veoma retko.
1911 Petar 10 p separate proof of horizontal strip of five in blue from original design, on thin toned paper 136x48 mm, very rare.