NOS Parts Indentification

[sdailey]

I've got a lead on a NOS '72 outer and inner grill and would like to know if there are any other distinguishing marks to look for other than an original GM sticker or box. The gentleman that has them bought them from a local Chevy dealer a few years ago when he was restoring his truck. He lost interest while restoring it and he said that both pieces are new never installed, but he said the boxes got wet at some point and he tossed the boxes. He's an older gentlemen and doesn't have access to a digital camera, so I'm going today to look at them. His asking price is good even for repop, but I wanted to be able to indentify if they are in fact NOS parts.

Thanks for any help.