Drop-in resolution
Donor movement for the Ronda 6203.D
Which movement drops into a Ronda 6203.D case, and what has to match beyond the footprint.
Drop-in available. The Ronda 6203.B shares the Ronda 6203.D footprint (26.00 mm x 3.30 mm, dual time and date at 3) and is the standard donor.
The Ronda 6203.D sits in the Ronda 11 1/2 quartz dual-time (26.00 mm x 3.30 mm) group. The Ronda 6203.B share its casing diameter, height and calendar layout, so a case and dial built for the Ronda 6203.D accept them with the correct dial and hands.
Matching diameter and height is necessary but not sufficient. A donor is only a true drop-in when the dial-foot positions, hand-hole sizes, stem length and calendar layout also match. Two movements can share a case and still need a new dial, re-broached hands or a cut-to-length stem.