The ref. 310.025 was introduced in 2001. This Langematik Perpetual Calendar features a platinum case and a silver dial. Earlier versions had a square corrector button at 10; this was later changed into a recessed button (+/- 2004).


The ref. 310.025 was introduced in 2001. This Langematik Perpetual Calendar features a platinum case and a silver dial. Earlier versions had a square corrector button at 10; this was later changed into a recessed button (+/- 2004).
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