Large badge.
History of the badge https://asiamedals.info/threads/history-of-special-committee-for-the-strengthening-of-the-russian-naval-fleet-and-its-air-fleet-department-badges.24633/
Gold, silver (the eagle as well as the plane and screwplate are in silver), blackening, enamel.
Size 46 х...
airforce strengthening special committeebadgegoldenbadgeimperial russia airforcebadgeimperialrussianair fleet gold badgeimperialrussianairforcecommitteebadgeimperialrussianairforcecommittee gold badgeimperialrussianairforcecommitteegoldenbadge
золотой знак
нагрудные знаки императорской россии
нагрудный знак
особый комитет по усилению военно-воздушного флота