Brunei, Covers, 1967-73. Lot of well over 300 commercial covers, franked with various varieties of the Sultan Omar types of the period, most addressed to Singapore and postmarked "Brunei, Brunei" or "Bandar Seri Begawan, Brunei"; many with Singapore receiver; some variety of franking combinations but large duplication; condition generally F-VF. Estimate  $100 - 150. $0