The Harwin Inc. S8211-46R is an uninsulated SMT battery coin cell holder/retainer designed for 20mm diameter batteries. It supports 1 cell and operates from -40°C to 105°C.
Keystone Electronics 104 is a through-hole battery holder for one 23mm coin cell (series 2320-2335). It features PC pin termination, steel contacts with tin-nickel plating, and a high temperature nylon 46 housing rated UL 94V-0.
BAT-HLD-001 is a coin cell retainer from Linx Technologies for a single 20.0mm coin cell. It features SMD (SMT) tab termination and a PCB surface mount design with a height above board of 0.165" (4.20mm).