Central escutcheon flange-CN521B

Central chrome plated escutcheon flange for tub and shower, 9/16" inside diameter x 2-3/4" outside diameter x 2-1/4" height...Old DPS 421, 3C 72-3890, TR CN521B, OEM 521-B, CN521B,FP-CE-49(ABRCB50421)