The original Daniel Roth Instantaneous Perpetual was launched in 1998, and based on a Lemania ebauche. Semi-instantaneous Perpetual ref. 117; circa 1998. Fitted with a Lemania 8810 base movement and n perpetual calendar module designed in cooperation with Philippe Dufour himself. See the addendum at the bottom of the article for more on the semi-instantaneou nature of this first model.   Above version, ref. 117i.L40.888, has the same Lemania base but is presented with a skeleton...

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