Perfins first used officially in New Zealand in 1883.
Vacuum Oil Company
To date Vacuum Oil Company is the only perfin that has been identified as appearing on the 1935 Silver Jubilee issue. It is possible that three other companies may have also used their perfins.
Three different types of VOCo perfins have been identified.
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1902
1913
1924
1946
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Type 1. First introduced. Single line VOCo. Used in 5 offices.
Type 2. Two lines VO/Co. Most widely used of the VOCo perfins. Used in 12 offices.
Type 3. Single line VOCo. Used in 9 offices.
Withdrawn from service.
Thought possible to distnguish between the different offices by the perfin holes missing in "C"
History of Company
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Founded by Mathew Ewing in Rochester, New York (1866) who devised a technique for making kerosene (paraffin oil) by distilling crude oil in a vacuum. Purchased by John D. Rockefeller (1879) and made part of Standard Trust but retaining its own name.
Vacuum Oil opened offices in Australia (1895) and New Zealand (1896) as part of its expansion into Far East. In 1931 the company merged with Standard Oil of New York (Socony) and two years later merged again with the other arm of Standard Trust to be known as Standard-Vacuum (Stanvac) operating in 50 different countries. In 1962 the company was dissolved and became Mobil Oil. Today the company is part of ExxonMobil.
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