Search:

If it is two strips of leather then yes Kevin is most likely correct...
Perhaps along the line of Dovo strop pastes. See Amazon for a
vendor description...
"Dovo Strop Paste, Red and Black...

One piece only correct?

The back of a Russian leather strop will have a grid like pattern pressed
in it. The grid side is not used to strop. It is a result of the leather
being squeezed...