Rare country combos

These rare country combos have probably been made by connoisseurs. The US and GB 1965 stamps were issued with only a month delay, and only two have been observed of this UK Salvation Army FDC (on US cachet and with US stamp).

SA 4.3 - US Country combo (Switzerland)
SA 5 - UK FDC - Country combo (US)
1983 - US FDC w/ British SA stamp