Noticed in today's Hotels, Lodging & Restaurants: Casa Camper in Berlin: a vintage pushbutton office phone. Here are some similar options:

Above: OK in Los Angeles carries a selection of Vintage Phones in several colors; $215 each.

Above: The Crosley Ivory Desk Phone; $59 at Amazon.

Above: Anthropologie Vintage Rotary Telephone; available in blue, green, orange, and yellow; $198 (blue is currently on sale for $99.95).

 Above: Vintage Black Rotary Phone; $33 at La Brocanterie on Etsy.