Interesting that the design of the 706 and 746 were arguably influenced by the American Type 500 table phones, but that influence stopped with the 711 and 741 with regard to the handset rest. Instead of a cradle for a vertical handset rest as per the 554 and its successors, the GPO instruments had a horizontal rest on the top. However, I believe there was at least one GEC wall telephone with a vertical handset rest. I remember seeing something similar in yellow on a 1970 Doctor Who episode, but that could have been part of an internal paging system.
I think the 554 and 2554 are among the most stylish of wall telephones but the clunkiness of the 1/706s brings a certain British appeal
.