Protection / Watson & Sons. Advert, 1927.
Licence: In copyright
Credit: Protection / Watson & Sons. Advert, 1927. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0082379/full/800%2C/0/default.jpg)
Licence: In copyright
Credit: Protection / Watson & Sons. Advert, 1927. Wellcome Collection. Source: Wellcome Collection.