Specific original location unknown
The blurry old image below, which is not of an actual marker, but rather of an image of a marker, indicates that Bethany did once have Keystone Markers. The presence of a replica seems to confirm that. However no trace of either of the originals has been found.
Replica has "Pleasant Mount - 12", likely what was on the original. The other would have had "Honesdale" as next town.
Replica states "Settled 1801." Typically the markers had a "Founded" date.
Replica text, likely what was on original, is:
Wayne County Seat 1805-1841 Named For Bethany In Palestine
From 2008 PennDot VideoLog
Replica – Aug. 2020 photo by J. Harvey
Once on SR 670
Originals are known only from the blurry image above