1918, red proof overprints in Roman type on Postal Charity stamps of Bosnia, complete set of two, full OG, NH, VF and scarce, P. Zrinjscak certificate (Image)

1918, black overprints in Roman type on Postal Charity stamps of Bosnia in changed colors, complete set of two, full OG, NH, VF, expertized by J. Colic and several others, Mi #A19-20, €700, Scott C.v. $225 as hinged (Image)

1918, black overprint in Cyrillic type on 5h green, full OG, NH, VF and scarce, expertized by J. Colic, Mi #A19 II, €900, Scott C.v. $375 as hinged (Image)

Postage Due stamps. 1918, inverted black overprints on Postage Due stamps of Bosnia, complete set of 13, full OG, NH or VLH (2), F/VF, each stamp expertized by J. Colic (Image)

Postage Due stamps. 1918, black overprints of transposed types (Roman vs. Cyrillic and vice versa) on Postage Due stamps of Bosnia, set of seven values, full OG, NH or VLH (1), mostly VF (Image)

Semi-Postal issues. 1918, black overprint on Postal Charity stamps of Bosnia, complete set of two, in addition 15h with Cyrillic type of overprint and complete set with double (one inverted) overprint, the last ones expertized by D. Marjanovic, full OG, NH, VF (Image)

Special Delivery stamps. 1918, red overprint in Cyrillic type on 5h deep green, horizontal pair, full OG, NH, VF and scarce, stamps bearing red overprint had never been officially issued, expertized by D. Marjanovic, Mi #18 IIb, €1,000 as singles (Image)