Shiga Insect Company Cardboard Specimen Box with Glass Lid, Extra Large Size, Set of 2 (Unused)

I found this Shiga Insect Company cardboard specimen box with glass lid, extra-large size 305x230x50mm, at my parents' house, but it seems to be discontinued. I have two of them. One has a slightly peeled packaging seal, but both are unused and unopened. From what I can see online, it appears to be a slightly larger version of the current specimen box (272x205x50) which costs around 10,000 yen. Based on the specifications, it is likely lined with white polyfoam and has a glass lid, but I cannot confirm as it is unopened. It has been stored in a place without direct sunlight, so there is no fading or dirt, but it is an old item. I would appreciate it if you understand this.

I am also listing another specimen box that is slightly larger. If you purchase both and they can be shipped together, I will offer a discount equivalent to the shipping cost, so please contact me before purchasing.