3g+2g Reaping Wheat, 8g+2g Log Raft, 10g+5g Cement Factory, 12g+8g Coal Mine, 18g+12g Oil Derricks, 30g+10g Textile Machinery, 35g+15g Iron Furnace, and 60g+20g Electric Power Lines Vienna Samples Fair Semi-Postals 1947 Wiener Internationale Messe, Rotund