I have put this new thread on here to make it easily accessible, and where it is now it seems to be an obstacle. It is as been said by many, that the numbers system used by John Barwise is complicated, but the more we find of his work, the more clearly it becomes, that his system was straight forward. We are talking here of John Barwise senior, who lived from c1756 to 1820. Probably because he knew he was dying, he brought his two sons into the business in 1819. Weston Barwise (1793-1826) and John Barwise /1795-1869) to continue the Business. Though looking at the File below we can see that up to 1820 the numbers were consecutive. The file below has been corrected and more numbers installed. Anyone who has a Barwise pocket watch, not on this file, I would be pleased to hear from them. Allan.