G. L. Murphy.—Not generally collected in the U. S., hence no value can be quoted.
A. Mittel.—The coin is probably the William III. of England. The stamp is the current 2c. postage-due.
A. Bee.—The unused U. S. and British North American Colonies stamps issued before 1865 are all advancing in price rapidly. The used stamps are also advancing, but slowly.
J. Wolfert.—If the stamps you mention are in good condition I would advise you to sell them by auction. Rarities bring a higher price when all the big collectors compete for them. Common stamps, on the other hand, do not bring catalogue price at auction.
W. J. Holbeck.—The Mobile 5c. blue is quoted at $7.50. If on the envelope do not take it off.
J. Adams.—The present $1 black U. S., it is said, will soon be printed in another color. The 8c. with triangular ornaments is on sale at many offices. No copies have yet been seen with the white-framed triangular ornaments.
Frank T.—Almost any dealer can supply you with a complete set of the U. S. stamps (cancelled) showing die varieties between 1870-1882. It consists of the 1c., 3c., 6c., 7c., 10c., and 12c., and, counting shades, numbers about twenty stamps. Prices vary.
M. C. Wright.—The best way is to go to responsible stamp-dealers, look over their stock, and take no damaged stamps at any price, however low.
Round Table.—I do not know to what "1894 penny" you refer. The dimes have no premium.
S. T. Dodd.—Yes. The present issue of U. S. will probably all be printed on water-marked paper.