I looked for your particular mark and did not find it listed among those from Luneville !! As far as value,, they have a wide range but Wendy`s estimate sounds about right !! Of course with the slow market,, it could be less as well !! If it were me I would use google images and see if you can find a similar style vase then match the mark !! Keep in mind it doesn`t have to be the exact same vase,, just similarly styled and painted !! I didn`t find anything like it when I looked !!