Old Lamp Gas/Kerosene

[JETTY604]

I HAVE AN ANTIQUE LAMP FROM THE LATE 1800's  THE MARK ON THE BOTTOM IS THAT OF A SAILBOAT WITH DOUBLE SAILS and the number 1.  Under the boat is the word SALE and under that is "M" and DROG.
It has the same Tiffiny type lamp shade.
Anyone have any idea?
Thank you....