Top Stamps of the World.. Maximum output with some simple thoughts...
Pan American Invert
The Pan-American invert was issued in 1901 in USA during the Pan-American Expo. The stamps were issued with ornate colored frames enclosing a black-and-white image of various means of transportation. The two color printing left the possibility of errors. The stamp contained three denominations, 1 cent, 2 cents and 4 cents, out of which the 1 cent was considerably more common than the others.
The pineapple was symbol of welcome in the 1700-1800's. That is why in New England you will see so many pineapples on door knockers. An arch in Providence RI leading into the Federal Hill neighborhood has a pineapple on it for that very reason. Pineapples were brought home by seafarers as gifts.