3a [1873 8 skilling, Imperf] IMPERFORATE horizontal pair with large to huge margins. Never hinged, but issued without gum. Natural, typical paper thinning (similar in cause to a watermark) on right stamp, but is NOT a "thin". Wonderfully fresh and attractive. Facit 2010 value for 2 singles is SEK 6000 = US$840 [1/10]! Very scarce! Interestingly, the imperforate stamps are tremendously scarcer than the regular perforated stamps, but only have a slightly greater catalog value.