This display box uses some fairly cheap and easy to acquire 3.5x2 acrylic name plates. Simply snap them into the channels and your golden.
To assemble all you really need to do is super glue the four acrylic pieces to the top piece. Simply apply a small amount of super glue and install each piece making sure to push each one to the outer most wall and then butting them up to each other. I highly suggest test fitting before applying any glue. After this youll be able to simply align the pieces with the bottom part and they will slide into the channel cut into it giving it a nice snug fit. Iv rigorously shaken it about with zero issues!
Two models available! One has a name plate on the base for grading purposes as well as simply writing the name in or whatever youd like!
Acrylic name cards:
20 Piece - https://www.amazon.com/dp/B083BLL1L7?psc=1&ref=ppx_yo2ov_dt_b_product_details