Antique Gentleman\'s Bit Brace - Wooden Woodworking Brace, J.P Decker For Sale

Marked J.P.Decker. I have not found info on this tool maker. Working condition and great to display. This was found in my grandfather\'s tool box and almost certainly belonged to his father before him. The insert for the bit is the most simple and probably the oldest style
Would clean up but is collectable as is. 11 inches long...About an 8 inch sweep.
I have seem the same elaborate wooden turned hand hold brace listed as \"Gentleman\'s brace\" No idea what that actually means. But I am using the term in case it has a special meaning for tool collectors