Re: Royal Bulgarian D. 520
As replied on the French board "Aérostories", this would be surprising as these roundels were discarded when Bulgaria joined the Axis powers in June 1941.
The D.520s were delivered from October 1943 on, long after the black Saint-Andrew cross on a white square had replaced the Bulgarian coat of arms.
But who knows... our passion is full of suprises.
Chris
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