Kent at Electrostatic Solutions restored my ’57s a little less than two years ago. I paid him a modest charge to supply two robust shipping cartons, he arranged UPS freight pick up, the work was done fairly quickly, and shipped to my new location without any issues. Those speakers, which I had purchased in 1973, had been dormant since about 1990-- they play wonderfully now, with a protection circuit, being driven by a pair of restored vintage Quad II amps (with GEC KT 66s!).
I had also owned a pair of Crosby- modded ’63s, but didn’t feel a need to restore those; I preferred the sound of the original for midrange, to the overall more usuable 63. (I don’t use the 57 in my main system but a second, vintage system).
My experience was altogether positive, from shipping and packaging to delivery to the performance of the restored speaker. Kent did a sympathetic cosmetic restoration, but nothing drastic. He did replace the quirky Quad power plug and inputs with modern receptacles. I can highly recommend his work. (Bill Thalmann, to whom Kent referred me, did the restoration work not only on the old Quad amps, but on a slew of other vintage stuff that now comprises this second system).
I had also owned a pair of Crosby- modded ’63s, but didn’t feel a need to restore those; I preferred the sound of the original for midrange, to the overall more usuable 63. (I don’t use the 57 in my main system but a second, vintage system).
My experience was altogether positive, from shipping and packaging to delivery to the performance of the restored speaker. Kent did a sympathetic cosmetic restoration, but nothing drastic. He did replace the quirky Quad power plug and inputs with modern receptacles. I can highly recommend his work. (Bill Thalmann, to whom Kent referred me, did the restoration work not only on the old Quad amps, but on a slew of other vintage stuff that now comprises this second system).