looked up the albatross bone extensions and yeah that's what it looks like. Frankly the only one I saw that looked good to me was a barling one.
The middle bit looks like it may be albatross wing bone - a material used often in that era (if it is indeed pre-1920s, if predicated by the orific bit).
Agreed, but if there’s a accessible comprehensive French trademark database I haven’t found it yet. The ones online that I’m familiar with are as porous as the ones for the US & UK.