Notches? We don't need your stinking notches!
http://cgi.ebay.com/1958-Blue-ATT-Rotary-Dial-Telephone-Phone_W0QQitemZ320342446337QQcmdZViewItemQQptZCorded_Phones?hash=item320342446337&_trksid=p3286.c0.m14&_trkparms=66%3A4|65%3A10|39%3A1|240%3A1318
( dead link 07-14-21 )
The only thing 1958 about that phone is the base/network/bells.