Trident Overprints - Odessa. 1918, black overprint (type 2) on 15k brown violet and blue, two perforated singles with nice pre-printed paper folds, large part of OG, previously hinged, VF and a spectacular items, expertized by Dr. Seichter, Bulat #1105e, C.v. $300, Est. $250-$300 (Image)

Trident Overprints - Odessa. 1918, black overprints on imperforated 15k brown lilac and blue in vertical pair, top stamp has overprint type 2, bottom one - type 4, full OG, NH (bottom stamp) or LH, VF, and scarce, expertized by U.P.V., Bulat #1116b, no catalog value indicated, Est. $150-$200 (Image)

Trident Overprints - Odessa. 1918, inverted black overprint (type 7) over black surcharge 20k on 14k blue and carmine, large part of OG, VF, expertized by Dr. Seichter, Bulat #1265 var, this invert is not listed in the Catalog, Est. $150-$200 (Image)

Trident Overprints - Odessa. 1918, black overprint (type 9) on 3.50r and 7r, two stamps printed on vertically laid paper, clear Odessa cancellations, mostly VF and rare, properly expertized, Bulat #1309-10, C.v. $200 for used 3.50r and ''-'' for used7r (price for unused is $350), Est. $500-$600 (Image)