RUANDA URUNDI (1928) Cement factory. Illustrated postal card (N) of Belgian Congo overprinted for use in Ruanda-Urundi. Sepia photo of cement plant in Lubudi. Card #42 in series of 50.
AVAILABLE AT $60
ETATS UNIS (1949) Femme (Pèlerine)* versant du sel. Empreinte violette de machine à affranchir sur fragment Pitney Bowes No 59783: "Le sel en grains 'Diamond', le sel américain de qualité pour la table."
AVAILABLE AT $30
NEW CALEDONIA (1955) Nickel mine. Deluxe sheet. Scott No C26, Yvert No PA 66.
AVAILABLE AT $20
U.S.A. (1957) Bucket of molten steel. Red meter cancellation on cover front Pitney Bowes No 328524: "Steel Centennial, 1857 - 1957."
AVAILABLE AT $12
FRANCE (1959) Miner's lantern. Tools. Deluxe sheet. 175th anniversary of National Mining School. Scott No 914, Yvert No 1197.
AVAILABLE AT $25
SOMALI COAST (1962) Camels. Salt. Imperforate pair. Scott No C24, Yvert PA29.
AVAILABLE AT $25
SENEGAL (1964) Phosphate quarry. Deluxe sheet. Scott No 233, Yvert No 238. Hard to find!
AVAILABLE AT $20
SENEGAL (1964a) Dredging titanium. Deluxe sheet. Scott No 230, Yvert No 235. Some very light toning spots.
AVAILABLE AT $15
SENEGAL (1964b) Titanium extraction. Deluxe sheet. Scott No 231, Yvert No 236. Some toning spots.
AVAILABLE AT $15
SENEGAL (1964c) Cement works. Deluxe sheet. Scott No 232, Yvert No 237. Hard to find!
AVAILABLE AT $20
SENEGAL (1964d) Phosphate ore extraction. Deluxe sheet. Scott No 234, Yvert No 239.
AVAILABLE AT $15
SENEGAL (1964e) Mineral dock. Deluxe sheet. Scott No 235, Yvert No 240.
AVAILABLE AT $20
FRANCE (1970) Miner's lantern. Lens coat of arms. Mine pit head. Deluxe sheet. Scott No 1277, Yvert No 1642.
AVAILABLE AT $20
FRANCE (1970) Miner's lantern. Lens coat of arms. Mine pit head. Die proof in violet-brown signed by the engraver COMBET. Scott No 1277, Yvert No 1642.
SOLD
FRANCE (1972) Mineshaft. Polish immigrants. Die proof in brownish-violet signed by the engraver BEQUET. Scott No 1358. Yvert No 1740.
AVAILABLE AT $140
FRANCE (1986) Quartz. Deluxe sheet. Scott No 2018, Yvert No 2430.
SOLD
FRANCE (1988) The Four Elements. Set of 4 deluxe sheets. Scott Nos 2101-4, Yvert Nos PRE198-201.
AVAILABLE AT $50
NEW CALEDONIA (1994) Tiebaghi mine. Deluxe sheet. Scott No C269, Yvert No PA326.
AVAILABLE AT $15
NEW CALEDONIA (1995) Sebertia acuminata. Bloc gommé. Scott No 717, Yvert No 692. Hyperaccumulator of nickel.
AVAILABLE AT $20
FRENCH MOROCCO (1947) Tanker car of phosphates. Symbols of plenty. Partial map of Morocco. Deluxe sheet. Scott No B33. Yvert No 265. 25th anniversay of phosphate exploitation.
U.S.A. (1956) Hawk. Red meter cancellation on cover Pitney Bowes #314610: "Hawkridge, your best source for warehoused metals."
FRANCE (1986) Moissan. Chemical formula. Laboratory glassware. Deluxe sheet. Moissan discovered many of the properties of fluorine compounds. He was also the first to produce artificial diamonds. Scott No B576, Yvert No 2397.Interesting!
FRANCE (1986) Heroult. Aluminum. Deluxe sheet. Heroult, along with Hall, discovered the process for refining aluminum. Scott No B579, Yvert No 2400.
CONGO (1975) Iron bar used as money. Imperforate dated corner block of 4. Scott No 345, Yvert No 396.
CONGO (1975b) Okengo iron bar. Deluxe sheet. Scott No 345, Yvert No 395. Fascinating!
CANADA (1929) Dogsled team. Mail plane. First flight cover Fort Simpson to Fort McMurray with delightful cachet, franked with Canada Scott No C1.
FRANCE (1963) Email Mayrisch. Blast furnace. Trial color proof. Mayrisch was an industrialist who brought together the iron and steel industries in Europe. Scott No 1062, Yvert No 1385.
U.S.A. (1920) Teaspoons. Silverware. 1 cent response postal card (N) with advertising: "This is the way I found my silver." "Harpar's Bazaar."
U.S.A. (1926) Man examining copper coffee pot. Postal card (O) with illustrated ad on reverse for Baltimore Copper Smelting & Rolling Co. Number 7 in a series about the history of copper.
U.S.A. (1932) Fruits. Vegetables. Cows. Iodine. Two cent postal stationery (O) with illustrated ad for South Carolina products that contain sufficient iodine for nutritional requirements.
MAURITANIA (1962) Ore train. Camels. Deluxe sheet. Scott No 131, Yvert No 161.
FRANCE (1969) Drops of water. Diamond. Deluxe sheet. European Water Charter. Scott No 1256, Yvert No 1612.
AFARS & ISSAS (1974) Lake Assal. Set of 3 imperforate blocks of 4. Scott Nos C99-101, Yvert Nos PA102-4.