1930 Western Electric Model 102-B1 desk set featuring the round base, paired with an E1 seamless handset.
The telephone is fitted with a 4H rotary dial dated to the second quarter of 1931 and retains an experimental all-celluloid number plate dated to the third quarter of 1934.

E1 Seamless Handset

E1 Transmitter and Receiver

1930 Base and 1931 4H dial with a 1934 experimental all-celluloid number plate.