Antique 6 inch ruler from early 1930's . O.K. STAMPS SEALS STENCILS LTD. Very good condition for its age. A very hard to find item in this condition.

History at:

http://www.mhs.mb.ca/docs/archives/korvemaker/REPORTS - Regina - OK Marking Ltd - 2003.pdf
When you call please mention you found this ad listing on OKz.ca