Antistatic cleaner brush for darkroom negatives vintage

Could be from 1960s or earlier. Anti static brush meant for the darkroom, similar to Staticmaster but more heavy duty. Weighs about 1 lb 10 oz. I couldn't find one just like it online, the most similar is Kinetronics KineStat Darkroom Brush for 120 negatives. But this one rests on a table and you can clean negatives without having to mount it. Nuclear products Pako corporation. For safety information, this gets very technical but basically the half life is short and 60+ years later, there are no concerns... see Static Eliminators (1960s and 1980s) | Museum of Radiation and Radioactivityhttps://www.orau.org/health-physics-museum/collection/consumer/miscellaneous/static-eliminators.htmlStill, a good brush for your negatives. Paint the exterior and make it look nice. Perfect for everyday use. High quality materials and excellent craftsmanship ensure long-lasting durability.