Timepiece case/dial plate assembly

In a timepiece, the combination of:

• a. a non-circular dial plate having a first plan dial plate dimension and second plan dial plate dimension, and
• b. a case for housing the dial plate, said case having a rear surface with a projecting wall defining an access opening, an inner wall defining an interior chamber in communication with the access opening and a front wall defining an annular seat extending into the chamber and on which the dial plate rests in the chamber, said access opening having a first plan dimension larger than the corresponding first plan dial plate dimension and a second plan dimension smaller than the corresponding second plan dial plate dimension such that the dial plate is oversized in the second plan dimension, said case having an undercut portion in the direction of the second plan dimension of said access opening defining a maneuvering recess for the dial plate, whereby the second plan dimension of said dial plate can be inserted through the access opening by tilting the dial plate relative to the access opening and inserting a portion of the dial plate along the second plan dimension in the maneuvering recess to thereby accommodate the oversize in the second plan dimension and allow the remainder of the dial plate along the second dimension to be pivoted through the access opening.