"WP" wheel coding

[Sturmgewehr]

Can someone date this wheel for me from the pics? Thanks

http://www.fototime.com/B689D1B6B9E8E54/standard.jpg
http://www.fototime.com/2EC56033149E19D/standard.jpg
http://www.fototime.com/2590B6BA918B9EE/standard.jpg

[Duane]

If you write down the codes I can do it. There is too much glare in the pics to see them.

It should be something like M4/? ? ? WP
Duane

[Sturmgewehr]

Duane looks like M4 2 20 WP, Thanks Pete

[Duane]

"Duane looks like M4 2 20 WP",

Pete,
The number under the "M4" is the year, so the wheel would be Feb 20, 19??, but with a code of "WP" it would be 73 or newer.
Duane