It was a common practice in the 18th century to replace the movement in a particularly expensive or beautiful watch. Examples can be found in numerous museums and private collections. A few years ago, while researching the records of Ferdinand Berthoud, Jean-Claude Sabrier came upon an order from Monsieur Muchain for a movement specially made for his old enamel case. Berthoud made this movement, o. 2358, in 1789. This proved conclusively that old enamel cases were held in such high esteem that custom movements were occasionally made to order for them. See Antiquorum, Lord Sandberg Collection, March 31, 2001, o. 264 We have seen magnificent Blois cases with later movements by Webster, Leroux, Pyke, Fromanteel and Berthoud. The artistry and rarity of these cases unquestionably warranted the expense of commissioning a special movement for them. The records found by Jean-Claude Sabrier are of the utmost importance and put to rest all speculation as to why later movements are so often found in these magnificent cases. Vertumnus and Pomona Pomona was an exceptionally beautiful nymph who watched over fruits and gardens. Vertumnus fell in love with her but his love was unrequited. He changed himself into a plowman, a winemaker and finally, an old woman. In this disguise he showed the nymph a vine shoot twining around an elm branch, whereupon they engaged in a discourse on love, the old woman pleading Vertumnus' cause. This convinced Pomona, and they were married.