Bronze Travel Icon Of The Great Feasts Of Christianity, Russia 19th Century

Beautiful bronze travel icon from Russia (Old Believers school) and dating from the first half of the 19th century.
It consists of four folding panels (quadriptych) which represent 16 Great Feasts of Christianity (Nativity, Annunciation, Resurrection, etc.) as well as four icons of the adoration of the Mother of God (panel on the far right). 
The upper part of each panel is curved in the shape of a bulb, reminiscent of the bell towers of Orthodox churches.
Once closed, the face of the quadriptych is decorated with a representation of Golgotha, the Cross and the walls of Jerusalem.
Very good condition.
Dimensions of the open quadriptych: (L) 41 cm by (H) 18 cm.
Dimensions of the closed quadriptych: (L) 11 cm (H) 18 cm.
This icon is sold with its certificate of authenticity and a complete description of the work.