Casting Dates?
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Are any of the casted numbers on 243 heads the production year? On the under side of the heads I have 0/3 and 9/7 as well as 5.3 and 99...just curious if anyone can make sense of these....
![](http://i16.photobucket.com/albums/b22/TypeRB16/IMAG1490.jpg)
![](http://i16.photobucket.com/albums/b22/TypeRB16/IMAG1489.jpg)
![](http://i16.photobucket.com/albums/b22/TypeRB16/IMAG1490.jpg)
![](http://i16.photobucket.com/albums/b22/TypeRB16/IMAG1489.jpg)
![](http://i16.photobucket.com/albums/b22/TypeRB16/IMAG1488.jpg)