Lot 392
392
unmounted mint Block of Four 6c Dark Blue & Carmine, vertical pair imperforate horizontally (C23a), T. margin block of four (yielding two error pairs) showing registration marker, never hinged (position numbers in pencil on reverse), one stamp has small natural gum skip, R. perfs. just touching, desirable variety, Scott retail $750.00 photo

Details
unmounted mint Block of Four 6c Dark Blue & Carmine, vertical pair imperforate horizontally (C23a), T. margin block of four (yielding two error pairs) showing registration marker, never hinged (position numbers in pencil on reverse), one stamp has small natural gum skip, R. perfs. just touching, desirable variety, Scott retail $750.00 photo
Sale room notice
The block has a partial separation. The catalogue value and estimate are unchanged.