|Note_en=from the models shown. Brochure made from a square sheet folded in half, and in turn folded into three at the flap. Outer side with the cover, the reverse and the folding. Section of the external side inside the flap, visible when unfolded. Advertising celluloid models [[Blackbird BB 2b]] and [[Blackbird BB 2]], and hard rubber models [[Blackbird BB 2]], [[Blackbird BB 22½]] and [[Blackbird BB 3]]. It cites the colors with [[Numerazione Swan|numbers]] 50, 52, 60 and 61. | |Note_en=from the models shown. Brochure made from a square sheet folded in half, and in turn folded into three at the flap. Outer side with the cover, the reverse and the folding. Section of the external side inside the flap, visible when unfolded. Advertising celluloid models [[Blackbird BB 2b]] and [[Blackbird BB 2]], and hard rubber models [[Blackbird BB 2]], [[Blackbird BB 22½]] and [[Blackbird BB 3]]. It cites the colors with [[Numerazione Swan|numbers]] 50, 52, 60 and 61. |