1879, 2¢ vermilion, 3¢ green, both stamps s.e. at right, tied by corks, partial "Boston May 15" origin backstamp on blue cover with printed address to Singapore, clear strike of San Francisco magenta "Too Late" handstamp, "San Francisco Cal. May 22" transit backstamp, indistinct red Singapore arrival cds; some age spotting, Fine and scarce use. Scott Nos. 183, 184  Estimate $400 - 600. $0 (Image)