Hi Heidi,

Thank you for contacting Mearto with your appraisal inquiry.
I haven't found which company had the FAL mark but it's got a wonderful Art Nouveau quality; I've valued this as a group of four sconces, valued separately from the shades so you know what each are worth.
Based on the photos and information provided, and subject to examination, this is:

A set of four Art Nouveau brass wall sconce
early 20th Century, with maker's monogram FAL to the interior
$300-500 ($75-125 each)
together with
three conical white milk-glass shades $75-105 ($25-35 each)
one opaque pressed glass fluted shade $50-75
PROVENANCE: inherited
$425-680*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.