Original Colt WW1 commercial Grips

Have what I am fairly sure is a set of WW1 Era Colt 1911 grips ( open to being set straight if not ) . They have the prescribed “15 “ row checkering lines between diamonds . Likely “ C “ prefix serial numbers . $250 plus mail from Ontario . If yours are Pooch’d a scarce item to find !
 

Cheers