Marty Wiemert, a member of Metal Detecting Maine, recently found a Hammond Turner button at an old site. Marty very kindly donated the button to my collection.
Marty found this button in his home state in the USA and contacted me about it. First he sent me photos, then he sent the button which makes a wonderful contribution to my collection. I cannot explain the back mark at the moment.
The button is a one-piece with a soldered shank and was made between 1820 and 1850 (roughly) as that was the period during which the company was known as Hammond Turner and Sons. The early style lettering is a further clue to the date.