Panama, 1904, Registration, 10c green, used with Panama 1904 Late Fee 2½c lake and 1904 1p lake, tied by purple duplex with time dials on cover with printed addressed to Germany, Mobile (10.19) cds with Mobile registry exchange label (FX-MOB1), New York (10.21) backstamp with New York registry label, Munich (11.1) arrival backstamp; reduced slightly at top and left, prepaid 1 peso for cover weighing 135-150 grams, Very Fine. Scott No. Panama F27 + I3, 82  Estimate $1,000 - 1,500. THE ONLY BOCAS DEL TORO REGISTERED COVER WITH LATE FEE PREPAID, EXCEPTIONALLY RARE 1P USED ON COVER. $0 (Image)