Perophone

Hi, I have recently bought an unusually large horn gramophone by Perophone (greyhound transfer on top the case). It is mahogony with boxwood & mother-of-pearl inlaid in an art noveau design on the front panel. 12 inch turntable, triple spring motor with brake acting on the govenor. It has a 21 1/2 inch mahogony Musicmaster horn. The back bracket looks Gramophone Co. inspired but with a Pathe style insert.
My problem is that the tonearm & soundbox are missing. I think it is unlikely I will find the arm so it will have to be made or adapted.
I have been unsucessful in finding another horn Perophone or a photograph for reference & I am sure you will understand my desire to get this very high quality machine as right as possible.
If anyone has any info it would be much appreciated
Roger