This is a display frame purchased from Store Express. It's now discontinued. It can accommodate thick styrene boards, allowing you to pin items for display. Instead of using the backing board that came with it, I used a velvet-covered board inside for jewelry display. I'll sell it as is, with the velvet attached, so please replace the black board if you prefer. The original black backing board is new and unused. It cost around 5000 yen each at the time. I'm also listing another one of the same item separately. The material is resin, so it's lightweight and sturdy, making it ideal for display purposes. Frame dimensions: 15 x 21 cm Inner opening: 9 x 15 cm #jewelrydisplay #pictureframe #frame #antiquestyleframe #engraving #engravingtools