It was made for Hart's around 1845 and is stamped below the button (shown below). It is now thought to have been made by John Lott junior. Some of the thinking behind this attribution is explained here.
The bass has had a busy professional life for at least the last four decades, including a long period in the Halle. Stamps in two places also indicate that it has spent some of its time in the army. It now has a more relaxed time on the amateur circuit in North Yorkshire.