An unusual ebonized hour striking large carriage clock with chronometer balance

An unusual ebonized hour striking large carriage clock with chronometer balance
Signed H'y Marc à Paris
Date: Mid 19th century
Movement: Rectangular plates supporting platform with right angle lever with cut bimetallic balance with timing screw, rectangular weight and helical spring, count wheel striking the hour and half hour on gong
Dial: Circular white enamel with roman chapters within gilt floral scroll mask, blued trefoil hands
Case: Rectangular with folding handle and beveled glass side panels on tapering ripple molded base raised on brass ball feet
Signed: Dial and movement
Size: 11 ¼ in (28.5cm) including handle