A friend is offering a 440mm f/6.3 Voighlaender Collinear ser.II for sale. Problem is, the lens has one of its outer biconvex glass elements missing. Looks like smashed into pieces and then uncemented and thrown away and replaced by an enlarger condenser lens by some previous owner who apparently wanted the old Collinear to look good rather then be worth for taking pictures. So the lens has only 1/2 of it usable, and I am not fond of using rear parts of double anastgmats alone at all.
Is there any chance some commercial optical shop could make exactly the same glass element for a reasonable price? (I am able to cement it into its place myself.) Thanks in advance.
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