I bought this BIN for 29.95 just because I wanted to see it in person.
Listed as " Vintage Black 1960's Bell System Western Electric Rotary Telephone".
It's a dates matching 5-38, single hump, reverse network 302 converted to a 5302.
Case is dated 3 23 60. Handset is grooved, solid core. Could be original to the base.
I'm shocked they would convert a 5-38 302 to a 5302!