Canada, Commonwealth. A Second War RCAF Type "B" Flying Helmet Auction Archive " stamped on the flip-open

" stamped on the flip-open front cover

1877 in Königsberg (Prussia)

Vavrin transferred to the University of Texas at El Paso

with only slight loss of finish visible to high-contact points

surrounded by the inscription ""FOR AMERICAN CITIZENSHIP / ONE FLAG / ONE COUNTRY / ONE LANGUAGE""

Canada, Commonwealth. A Second War RCAF Type "B" Flying Helmet Auction Archive " stamped on the flip-openRubberized mask with rubber hoses and khaki cotton straps, with the appropriate hardware, cords and whistle attached, in two basic pieces, manufacturer stamped in black ink "A. E. H. E." above "4" on one of the straps, marked "MEDIUM" with the British Broad Arrow on the rubber nose piece, marked with the King's crown flanked by "REF. No. 10A 12571 A" and "M 10A 12570" along with "ON" on the electronics, all four microphones marked "R. C. A. F. REC. C