Ambassadeur 2500C (A-A25-00C-M-060-N-C) For the first time, A Gold (often being referred as champagne) Small Ambassadeur was borne. Mamiya pushing beyond the conventional design in replacing the anti-reverse dog with the renowned Instant Anti-Reverse (IAR) Bearing made by German Manufacturer INA. Compared to her colored ‘CI’ cousins, these Small Ambassadeurs were more sort after as all the previous problems associated with the CI models were overcame within the last year or so. Produced in 1997.