This piece was invented by Charles J.B.
Williams around 1835. Williams took the previous versions of the
stethoscope (designed by Laennec and Piorry) and improved upon them.
This piece is complete with its removable ear piece that can fit
into either end. It has a lovely patina and is in excellent
condition noting the smallest of hairline cracks in the edge of the
main bell which is of no structural significance.
