Brooch and sleeve buttons set (demi-parure)

Brooch and sleeve buttons set (demi-parure)
Title
Brooch and sleeve buttons set (demi-parure)
Date 
1875-1900
Medium 
Tortoise shell, metal
Dimensions 
overall (brooch): 5/8 x 1 3/4 x 1 1/4 in. ( 1.6 x 4.4 x 3.2 cm ) overall (each button): 5/8 x 7/8 x 1 1/8 in. ( 1.6
Description 
Tortoise shell brooch and sleeve buttons set (demi-parure); brooch is horizontal oval with half-sphere at the center surrounded by double-lobed open work, with hinged pin and hook attachment on reverse; buttons are vertical oval with "H" at the center of beveled face, metal shank on reverse.
Object Number 
INV.769b.1-3
Marks 
carved: center, button face: "H"
Due to ongoing research, information about this object is subject to change.
Creative: Tronvig Group