Transvaal-OFS combination covers Become a memberEnjoy the benefits of membership for just £10.00 per year TSC libraryView our back numbers catalogue. Member downloads available Visit our blogFind out more about the fascinating story of Transvaal postage history Author: Drysdall, A.R. and Torres, F., (pg. 135-136)Published in: Volume 36, Issue 4, pg. 92-136, 2001