

Two Intra 121A handpiece couplings, for adapting Intra handpieces to No. 2 slipjoint, by Kaltenbach and Voigt, Germany, 1960-1970
Two Intra 121A handpiece couplings, for adapting Intra handpieces to No. 2 slipjoint, by Kaltenbach and Voigt, Germany, 1960-1970