Lot 1524
1917, $1 violet brown, strip of four, used with 50¢ red violet (517), all tied by "San Juan, Registered" double-circle handstamps on registered cover to Arecibo, Porto Rico, purple "San Juan, P.R., Registered, May 26 1920" double-circle datestamp, registry "446" number, affixed to package; creasing, no flap, Fine and rare territorial use.Scott No. 518 Estimate $500 - 750.
Realized: $600