Lioré et Olivier, aka LéO, Buttonhole Insignia, back

Manufacturer Markings and Silver Hallmark

 

Despite its bad Condition, this Item's very interesting, in Light of it's great Rarity.

 

Sterling Silver

 

Front here

flic.kr/p/Lkm6Dj

 

About LéO:

 

Eng. ref.: en.wikipedia.org/wiki/Lior%C3%A9_et_Olivier

Réf. française: fr.wikipedia.org/wiki/Lior%C3%A9_et_Olivier

Done