Black Western Electric 164C-3 dial plate and it can be used on Western/Northern Electric dial plates for No 6 dials. Plates are backward compatible with No 2, 4 and 5 dials (assuming that you have the proper mounting hardware).
164-C3 Dial Plates - Lot of 3
Leich - Handle - Vented
$34.95
Ericofon - Black
$149.95
202 - White - Chrome Trim
$399.95
Trimline - Gold - Desk Phone
$99.95
