Rosenthal Clock Frame Scratch, Modern Clock Frame from Rosenthal’s Scratch Collection. Manufacturer number: 69096-321409-05780. Rosenthal Silver Collection Silver laminated metal picture frames are all tarnish-proof, which saves you having to clean them. So please note that you should never clean a tarnish-proof product with silver cleaning agents. Simply dust or clean with a standard soft cloth to keep your Rosenthal Silver Collection frame looking shiny for a long time. Dimensions. 8x14 8x8 Cm. Rosenthal photo holder belonging to the "Silver Collection Scratch" collection. The decoration of the article is achieved by coupling a silver foil with a metal support. The silver is protected with an antioxidant paint. For cleaning, do not use alcohol, detergents, abrasives or thinners, but remove the dust with a soft cloth to preserve the brilliance over time. Photo size: 8x14cm. Clock size: 8x8cm.