|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 BB2B]] and [[Blackbird BB2]], and hard rubber models [[Blackbird BB2]], [[Blackbird BB22½]] and [[Blackbird BB3]]. 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 BB2B]] and [[Blackbird BB2]], and hard rubber models [[Blackbird BB2]], [[Blackbird BB22½]] and [[Blackbird BB3]]. It cites the colors with [[Numerazione Swan|numbers]] 50, 52, 60 and 61. |