This is a vintage technical photography camera lens filter 67.0s PL by Hoya made in Japan.
It is black on the edging and features a black glass lens filter.
The filter even has its own protective plastic casing that is original to the filter itself. It is labeled Hoya.
It measures 2.75"/ 70 mm in diameter when measured from edge to edge including the casing and the casing is .25" thick.
This item comes new in box condition.