A remarkable glazed gilt brass giant mantel timepiece with visible chronometer escapement made for the 1873 Vienna International Exhibition

A remarkable glazed gilt brass giant mantel timepiece with visible chronometer escapement made for the 1873 Vienna International Exhibition
Signed Samuel Králik fecit Pestini
Date: Circa 1870
Movement: Rectangular plates joined by six doubly screwed pillars, large going barrel, supporting a detachable platform, signed Králik Sam: Pest 1, with pivoted detent escapement, four wheel train, with concentric double contrate and escape wheels, the large diameter seconds-beating cut bimetallic balance with auxiliary compensation, trapezoidal weights, timing and poising screws, blued helical spring. The escapement platform can be removed from the case independent of the movement by releasing the locking nuts and lifting it out. The contrate wheel is locked by this action to avoid damage.
Dial: Signed, rectangular white enamel with roman chapter ring below large seconds ring, blued hands
Case: With plain corner columns and glazed sides, the rear panel with hand-setting lever and button to lock the train, large winding aperture with directional arrow and engraved attrahe/dextra and further signed Králik Sam Fecit Pestini, the upper glazed superstructure with latches at the sides releasing the hinged canopy to uncover the escapement
Size: 13 in (33cm) high