Here are some interesting pictures I found concerning the manufacturing of tennis balls by George Spencer, Moulton and Co. LTD (Spencer & Moulton) which was in business from 1891 – 1956. They became part of the Avon India Rubber Co. in 1956.
Images are used with permission of Grace’s Guide to British Industrial History
![This image has an empty alt attribute; its file name is Im1934BCI-Moulton08-404x500.jpg](https://vintagetennisballs.com/wp/wp-content/uploads/2019/04/Im1934BCI-Moulton08-404x500.jpg)
![This image has an empty alt attribute; its file name is Im1934BCI-Moulton01-657x500.jpg](https://vintagetennisballs.com/wp/wp-content/uploads/2019/04/Im1934BCI-Moulton01-657x500.jpg)
![This image has an empty alt attribute; its file name is 1934spencer-tennis-ball-weighing-404x500.jpg](https://vintagetennisballs.com/wp/wp-content/uploads/2019/04/1934spencer-tennis-ball-weighing-404x500.jpg)
![This image has an empty alt attribute; its file name is Im1934BCI-Moulton11-361x500.jpg](https://vintagetennisballs.com/wp/wp-content/uploads/2019/04/Im1934BCI-Moulton11-361x500.jpg)
![This image has an empty alt attribute; its file name is Im1934BCI-Moulton10-361x500.jpg](https://vintagetennisballs.com/wp/wp-content/uploads/2019/04/Im1934BCI-Moulton10-361x500.jpg)