This ten-inch swing brace has hardly any of its original nickel plating, but there is now a rich brown patina on the smooth steel and iron.  The Ellrich patent ratchet housing has the patent date clearly stamped on it, and the Peck & Powers chuck patent date is marked on the bow alongside the P.S.&W.Co. trademark and No.0102 model designation.  The pad's plain bearing is original and fully functional.  No apologies.

Here is that clearly stamped patent date of February 11, 1879 for the Peck & Powers chuck:
And here is the February 19, 1884 mark for the Ellrich ratchet mechanism:
The Ellrich patent drawings show fine serrations on the ratchet pawls, but at first they were made rather more coarse, as shown at right.  Later pawls have just a fingernail-threatening lip.  The serrated ones are more gentle to operate.