細節
A brass bell-shaped ear trumpet,
unsigned, with horn ear piece, 5½in. (14cm.) long, a silver-plated brass London Dome ear trumpet with scroll-pierced grille, 4in. (10.2cm.) long; and a brass Sonor-pattern ear trumpet, with extension tube, simulated amber ear piece and pierced grille, 7 1/8in. (18cm.) long, extended
See illustration (3)
unsigned, with horn ear piece, 5½in. (14cm.) long, a silver-plated brass London Dome ear trumpet with scroll-pierced grille, 4in. (10.2cm.) long; and a brass Sonor-pattern ear trumpet, with extension tube, simulated amber ear piece and pierced grille, 7 1/8in. (18cm.) long, extended
See illustration (3)