B. K. H.--I strongly advise you not to buy the Chinese local stamps. They are simply philatelic trash, and will probably be worth less money ten years from now than they cost to-day. Buy good stamps from a responsible dealer. As a rule the higher the value the more likely to increase in the future. This applies to all but the first-class rarities now worth from $50 apiece upward. W. F. BROWN.--No addresses of dealers can be given in this column. I believe the dealers have a full supply of all the Columbian stamps, except the $1 and $2, which are sold for $7 and $4 respectively. There is no 7c. Columbian stamp. M. S. C.--The coin dealers sell the 1803 cent for 10 cents. The English coins mentioned are all common. L. V. BLISS.--Thanks for your suggestion. I would adopt the same at once, but the postal laws do not permit the printing of any illustration of a U.S. stamp, or even part of such and the absence of illustrations would make such articles uninteresting and very difficult to understand. H. CROSSMAN.--England 1840 1d. black, 2d. blue. RAY B. BAKER.--The Cape of Good Hope, 1861, 1d. red is worth 60 cents, the wood-black, $15, the wood-black error, same issue, $250. The 1/2d, 1871 is sold for 6 cents. $1, $2, and $5 Columbian, $7, $4, $5.50 respectively. O. A. P.--It is not a coin, and is worth nothing. HELEN O. KAUPER.--The 90c. orange, 1890, is sold by dealers for $1.50 unused, 75 cents used. The coins are worth face value only. B. W. LEAVITT.--A 2c. stamp should always be enclosed with a letter of inquiry. C. MCQUEEN.--The values of all the Columbians are about the same as six months ago, except that the $1 has advanced to about $6 in value, and the $2 is hard to get at less than $4. H. H. BOWMAN.--The 3c. 1861 mentioned by you is the regular rose issue, but oxidized by time. All red stamps with cochineal are subject to oxidization from dampness, sulphur fumes, etc. H. C. DURAR.--I congratulate you on your discovery of a rare local. J. B. DAGGETT.--There are three varieties of the 1803 cent. The small circle is sold for 10c., the large circle for 40c., the 1-100 and 1-1000 for 35c. The Kossuth medal has no value. W. S. FOWLER.--The first postage-stamp ever made was the 1 p. black of 1840. It is sold for 8c. The 1 p. red was used from 1841 to 1880. There are many minor varieties, some of which are rare. E. P. NOYES.--The silver dollar does not command a premium. J. S. GREEN.--No premium on the eagle cent. The Dutch penny has no value in the U. S. W. H. KERR.--The two Siam provisionals, 1 att on 64 atts and 2 atts on 64 atts, are worth 10c. or 15c. each. The other stamp is a "sick-fund" stamp from Germany. C. C. PERPALL.--The difference in the stamps is caused by imperfect printing.