The Mamiya RB67 210mm f/4.5 is a medium-telephoto Sekor lens for the RB67 6×7 SLR system, sitting roughly equivalent to a short tele on 35mm and aimed at portrait and product work on the studio-oriented RB67 platform. It uses the bellows-focused RB67 mount and dates from the mainstream era of the system, making it a common partner to the standard 90mm.

At UK saleroom level the RB67 210mm f/4.5 is an affordable telephoto: the only logged hammer result in our records is £110 in November 2025, which gives a sense of what a clean, working copy sells for in the auction market today rather than at retail. With just one data point the spread is narrow, so buyers wanting to know what this lens is worth should treat that figure as indicative of mid-condition value rather than a firm price ceiling.