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1.35V PX-400 Film Camera Battery ADAPTER + BATTERY (Replace Mercury Cell) Fits MR-42 RM400, MRB400, H-B, For Pentax Spotmatic: Amazon.co.uk: Electronics & Photo
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Asahi Pentax Spotmatic F SPF SLR Camera w/ SMC Takumar 55mm F/1.8 Lens from Japan (C1951) | Big Fish J-Camera (Big Fish J-Shop)
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Exell Battery MRB400 fits Pentax Spotmatic, II, IIA, SP500, SP1000 Cameras : Electronics - Amazon.com
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