WWI Bulgarian Air Force Observer’s Badge

WWI Bulgarian Air Force Observer’s Badge - in silver, center section and are eagle gilded (most of the gilding worn off), hollow center, marked 935 on reverse, 42.91mm(width) x 76.95mm(height), weighs 31.3 grams, of superb quality German manufacture, of overall excellent quality and details, and an extremely rare original example; one of the rarest and most beautiful WWI flying badges.