[pure-silver] Durst Componon lens question

Hi ,
I recently acquired a "Durst Componon" 105mm enlarger lens by Schneider along 
with a bunch of stuff I bought from a retired photographer. This lens is a 
smaller size lens and I thought it would use one of the lensboards with a 25mm 
opening as do all the other small Componon lenses I have seen before. 
As it turns out, this lens is slightly larger and will not fit into the 25mm 
opening.  I measure it to be 28mm across the rear element. I have searched 
online but can find nothing about lensboards made with that size opening. (I 
have a Beseler 4x5 enlarger). Was this lens made specifically for Durst 
enlargers only? And are there lens boards with that size opening made for other 
enlargers?
Thanks.
John Meyers


      

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