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Lot # 687 | P | Scott # 520-21
| 1933, Baku Commissars, three trial color proofs, including two of 5k in brown and blue, and one of 20k in blue, printed on watermarked "Borders and Rosettes" paper, each one imperforated at one side and has perforation 14 at three other sides, two stamps with crayon marking on face, fresh, VF and scarce assembly . |