'67 Center grille bolts-correct style?

[67RTBlue]

Im talking about the bolts or screws that hold just the center mesh portion to the upper and lower rad support. I have small washer 3/8" bolts that were originally across the top but don't know what style held the bottom to the lower grille supports. I'm thinking they would have been the same bolts or maybe a phillips screw. Anyone with original cars care to look or send some pics? I'd like to the proper ones in if I can. And yes I know it could depend on what the guy on the line grabbed that day too!
Again I'm confindent the small washer 3/8" bolts are correct for our car across the top but the bottom ones are the ones I'm wondering about.