Beautiful grills. I hate to be a stickler but those are not NIB "new in box"
They are obviously out of the box. What u have are called
NOS - New Old StockThis does not affect value in anyway on typical antiques and the boxes are sometimes present sometimes not. But still NOS as in new but old and never used. Very cool.
The only time one might use NIB would be if it was sealed in the original box with the factory tape as in never opened and even then I would expect to see it still used in conjunction with NOS.
Hate to be a stickler but we need to treat these like the vintage collectibles that they are.