Roccal Antiseptic Tincture The transparent bottle, sealed with a twist-off metal cap, housed the “Roccal Antiseptic Tincture,” as denoted on the white paper label. The interior of the bottle bears stains from the dried residue of the antiseptic. A handwritten note on the label reads ‘16/8 Winchester.’ The label provides details about the contents, the manufacturer “Bayer”, and its usage. Roccal Antiseptic Tincture was commonly employed for skin sterilisation before surgery. 1925-1975