Mallonee Mechanical Handstamp, Washington, D.C., Dec 8, 91. From a probable 'electrical handstamp' (per POD documents) that showed minutes in the postmark, tying 1890 2¢ carmine on cover, Very Fine, known only late November and early December of 1891, few examples recorded from this fascinating device. Estimate  $300 - 400. $0 (Image)