I have a Nikon Universal condenser for phase contrast and DIC
"Universal Con.A Achr-Apl 1.4"
like this one: http://spectraservices2.com/Merchant2/m ... lcondenser
As I understand, these Nikon condensers were intended for use with the 20, 40 and 100 CF(N) Plan DIC objectives. Correspondingly, the condenser positions are labelled 20, 40 and 100.
However, this condenser has a position marked "60A" which appears to have a (large diameter) DIC prism installed. Does anyone know what this means?

Is this Nikon system a classical Nomarski design or a de Sénarmont design? I know very little about this system and can't find much information on the internet.
Finally, does someone have a photo of the Nikon condenser mount for this condenser? I'm wondering if it was possible to adapt it to a different stand, so seeing the original mount would be helpful.
Kind regards,
Ichty