. The pyramid phone has the original bell in the base. This was one of the best bakelite telephones of the 1930s. Its internal circuits are completely original and fully refurbished . There are the GPO marks, serial numbers and 'Made in England' mark under the handset and on the base. Some pieces also have the original drawing of the internal circuits stuck under the base. The base is 25 cm long and 25 cm wide. The phone is 20 cm in height.