CORINPHILA AUCTIONS 297 - 308 Day 4

Imperial Airways First Flight Service to Australia 1934 (Dec. 6): Envelope from Baile Atha Cliath to Sydney (opened on three sides for display), franked with Seahorse 2/6 d. plus 1934 2 d. green, dispatched to the IA First Flight London - Brisbane and forwarded by Rail to Sydney with arrival mark "Sydney NSW Registered  Dec. 21", re-posted at "Sydney / Dead Letter Office Jan. 4" and franked with Australian adhesives and returned to "Dublin Returned Letter Branch II FE 35". Scarce cover carried both ways on outgoing and return flight.