This is my model 1857 Waltham Wm Ellery manufactured about 1875. It is a 18 size key wind 7j with steel balance and runs beautifully. It came to me from England where it has spent its life, being cased in a sterling silver Dennison case with Birmingham hallmarks from 1877. Model 1857 Walthams may seem basic now, but were an important part of the start of modern watch manufacturing. The Dennison case has extra connections with Waltham, Aaron Lufkin Dennison was one of the men who joined to start what would later become known as Waltham in the 1850ies, and he was the factory's superintendent in the first years. After leaving Waltham in 1861, and a period with setting up the Tremont Watch Co, he started a watch case factory in Birmingham, England in 1874. From here he supplied the London office of Waltham Watch Co with cases. Dennison Watch Case Co was in business until 1967.