Possible René Lalique Perfume Bottles

These are two possible René Lalique perfume bottles. Both are frosted and are maked with what "appears" to be authentic marks.
The third picture is supposed to indicate authentic marks and they do indeed match the middle "mark". However these are highly forged pieces and I'm not certain these are 100% authentic as I cannot match them to any cataloged pieces. Still need to do a bit more research.
Any ideas on ways to authenticate or knowledge would be most welcome.

Thanks Tanni :)