1977 High Value Machin Philart FDC. With House of Commons CDS. The item "1977 High Value Machin FDC signed Margaret Thatcher, House of Commons CDS" is in sale since Friday, November 30, 2012. This item is in the category "Stamps\Great Britain\First Day Covers\1971-Now\Definitives".The seller is "wickham_stamps" and is located in Bromley. This item can be shipped worldwide.