FotodioX Adapter for Exakta/Topcon Lens to Sony EXAKTA-SNYE-PRO
Amazon.com : Fotasy Copper Auto Topcon Lens to Cannon EF EFS DSLR Adapter, Infinity Focus, Compatible with Canon EOS 6D 5D Mark IV III II 1Ds 1D Series 7D II 7D 80D
Topcon RE Zoom Auto-Topcor 87-205mm f-4.7 Vintage Camera Lens + Case | eBay
Topcon RE-Auto-Topcor 58mm 5.8cm f1.4 Chrome Prime Lens
Topcon RE Super SLR camera 2.8/35mm Topcor f/2.8 f=35mm wide lens