Red plate at top is New Martinsville # 36
Green Plate is Central's #1450
Pink Plate is Fostoria's #2419 Mayfair
Central has pronounced peaks in the corners and straight lateral lines between them.
Fostoria has rolling scallops on their corners, more like gentle rolling hills with on small beads or bumps on the straight edges between the corners.
New Martinsville has peaks in corners and more little bumps on their straight or lateral edges between corners.
The photo of the New Martinsville plate was provided by Janice Feehan.