Interest in U.S. Revenues is growing rapidly. The great rarities, 6c., 50c., $1, and $5 Proprietary, the $200 and $500, second issue, now readily bring two or three times catalogue prices. Many millions of these revenue stamps are on legal documents, agreements, contracts, leases, insurance policies, conveyances, mortgages, wills, etc., which are now out of date and of no legal value. All the U.S. Revenues were used throughout the United States for about twenty years, consequently a valuable lot may turn up any day in any part of the Union. During the past week several new minor varieties have been found, notably an unsevered pair of 10c. Power of Attorney, a stamp hitherto believed to exist in this condition, but no pair had ever been seen. The philatelists of New York contemplate a club-house, and the committee is now asking for one hundred subscriptions of $25 each. They hope to have the club-house ready this autumn. A few years ago most collectors in Europe preferred cancelled stamps, and several Americans exchanged many of their cancelled for unused copies. Now the demand all over the world for unused specimens has resulted in advancing the price of scarce stamps in this condition to a prohibitive degree. Most of the stamps in the following list of English could have been bought five or six years ago for one tenth the present price or less: [3]2d. 1840 $40 1d. huge crown water-mark, perforated, 16 40 2d. huge crown water-mark, perforated, 125 1d. red, plate 132 10 1/2d. red, plate 9 10 [3]1s. octagonal, 1847 40 [3]10d. octagonal, 1847 25 [3]6d. octagonal, 1847 30 2-1/2d. plate 3, orb water-mark 20 3d. plate 4, spray water-mark 25 4d. plate 10 15 6d. plate 6, four flowers water-mark 20 10d. red-brown 5 2s. blue 40 5s. plates 1 or 2, Maltese cross water-mark 15 5s. plate 4, anchor water-mark 75 10s. Maltese cross water-mark 125 10s. anchor water-mark 175 £1 brown, anchor water-mark 150 £1 brown, Maltese cross water-mark 300 [3] Practically unobtainable. H. L. WATSON.--Stamps surcharged "specimen" are exactly what they purport to be, genuine stamps whose postal value has been destroyed by the government's action in printing the word "specimen" on face. As a rule such stamps are worth about the same as the same stamp cancelled, but in the case of U.S. stamps they are frequently worth as much as unused stamps. STURGIS BODINE.--The wrapper is common, and is worth 5c.