You had me shaking my head "YL" is Nokian Tyre PLC - Nokia Findland.

.... but "CY" (first two letters) is McCreary Tire & Rubber Co. - they are the current manufacturers of the "reproduction" Goodyear Polyglas tires.

The last four digits is the date of the tire WW/YY, which date it to the 14th week of 2002.

Here are 4 reproductions that FEDEX brought to my front door today!!