An American Silver Porringer, Paul Revere Sr., Boston, circa 1750

of circular bombé form, the pierced keyhole handle engraved with contemporary block initials P"G"K, the front  with later initials J.K.W. to H.M.W. within scrolls, marked inside bowl and underside of handle P. REVERE (Kane mark G)

Sotheby's, 29 April - 1 May 1981, lot 395A

On loan to the Museum of Fine Arts, Boston, 1933-78.

Kane, Patricia E., Colonial Massachusetts Silversmiths and Jewelers, p. 850.

as noted re later initials, a little wear to mark inside bowl
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective qualified opinion.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.

The initials on the hande are those of Philip Godfrey Kast (d. 1791), a German-born physician, who practiced in Haverhill MA.  The later initials on the front of the porringer are those of Joanna (Kast) West and her husband Henry West.