Here's a Coin World brand "Premier Snap Tight" rectangular holder with place for a label. A 3-piece construction with 2 clear plastic outers that snap together (and unsnap too), plus a pliable rubber centerpiece that holds the chip. Actually designed for silver dollars, but fits a chip snuggly. There's an indented place above to hold a 5/8" x 1-1/2" label.

I've seen similar items by other makers as well. Here's a website with them selling for $1.40 each, but shop around if interested. It's just the first website I found --
https://www.amosadvantage.com/PRODUCT/1oz-SILVER-ROUND-PREMIER-COIN-HOLDER

Pictured is scan of the product with a mock-up for a chip I had laying around.