Wonderful antique silver icon lamp - vigil lamp - lampada.
European, circa 18th century.
Fine quality details on silver. 
Engrave with original early style monogram inside of lower rim (last picture).
Blue glass liner. 
Marked with in few paces on separated parts with unidentified silver hallmark, definitely european, guaranteed 18th century or earlier.
Guaranteed solid silver (800/1000 or higher silver standard). 
    Size:
About 3 3/16 in. (8.2 cm) high at the highest point. 
About 2 7/16 in. (6.2 cm) diameter at the top. 
Silver chain is about 11 3/8 in. (28.9 cm) long.
   Weight: 
Silver weight is about 3+ troy oz. (99 grams). 
Total weight including glass liner is about 222 grams.
   Condition:
Very good original antique condition with minor charming indication of age. Minor expected imperfections, dents and scratches, mentioned just for 100% accuracy and don't downgrade overall appearance or functionality. 
No problems with glass.
No previous repairs. 
Very difficult to photograph item - all dark and light spots you are seeing in the pictures is just a reflection or light tarnishing.
Rare example of early 19th century dutch silver.