Please contact me again if you have any further questions.
Sincerely, SUPREME LODGE KNIGHTS OF PYTHIAS Alfred A. Saltzman also sent an explanation of the sword's symbolism.
An international non-sectarian fraternal organization engaging in benevolent activities. In New York State, markers are uncommon, but in Maine they are very common along with markers for the siter organizztion - Pythian Sisters.
I have obtained a turn of the century Pythian Book published for one of its Pennsylvania Conventions.
I will be including some of that information at a later date.
Knights of Pythias was a fraternal organization founded in 1864 in Washington, DC.This rusted sword flagholder with the KP initials may be one of their commemorative signatures.Your picture does indeed show a Knights of Pythias grave marker.They are rarely used now-a-days but we do use a small Pythian grave flag that is put on graves during memorial periods.
I have sent you an attachment which explains the markings on a typical Pythian sword.Many of the same markings can be seen on the grave-marker and it will help you understand the history and heritage of the Pythian Order.