Daisy air rifle evolution from solid castings to tinplate.
With thanks to John A for this pic, which he says shows Daisy's:
"evolution from solid castings and drawn tubes towards the ‘tin'-plate mode of construction. To be accurate, the early pre turn-of-the-last century B.B models are not tinplates at all."
Daisy air rifles advertisement - Johnson Smith and Co
Daisy air rifles postcard ad (boy shooting from a punt)