Wallet card with some more old phone exchanges

Came across a couple more alpha-numeric phone exchanges on signs recently. These signs are easily 40-50 years out of date.


Noticed this antique sign in the window of Empire Safe on E. 39th Street. It is a sign for Krasilovsky Safes, the former name of the business, with a phone number starting with CA6.

Here is an elevator box in a service entrance in the garment district. Can't make out the whole numbers but it stars with YU9 (Yukon9).