Zipper Dating Help on a Coats Clark

[Happy Hooligan]

looking for help on dating a Coats and Clark on a King-O-Wear work jacket I just picked up. Any experts on this brand?

 

[Roughwear]

The zip track is identical to post War Crown ones and is not surprising as Crown was a subsidiary of Coats and Clark. The zipper dates to the late '40s/early '50s.

 

[Happy Hooligan]

thanks. that was my first guess, but I don't think I've ever seen any info or owned a Coat and Clarks jacket zipper before.