I have acquired a Jamin Darlot Cone Centralisateur Portrait Petzval 500mm F4.5 lens in need of restoration. I live in the UK so ideally, I would like to have it restored here, however, I am prepared to send it worldwide if necessary. There is balsam separation to the front element. The rack & pinion appears complete but is not working. If anyone can help or point me in the right direction I'd be grateful.
Thanks in advance