Photographs of mineral No. 65072: Spinel (3 crystals mounted in Perky box) from Mogok District, 115 km NNE of Mandalay, Mandalay Division, Myanmar (Burma)
Set of 6 Perky Boxes With Inserts for Thumbnail Specimens - Etsy
Plastic Perky Box Clear and Black Cube
Perky Boxes — Crater Rock Museum
35 piece Mix Mineral Specimens Mounted in Perky Boxes Polybasite, Rhodochrosite, | eBay