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Home / Classics & Collectables / Lenses / rd_gray_periscope_no10_1348 52
Item Name : R.D. Gray Periscope No.10 36in (918mm) f14 ULF Wide Angle Brass Lens
Serial no. : 1348
Reference : Extremely Rare No.10,cover 16x20in wide open,30x40in when stop down,3.4in front and rear elements diameter, not catalogue state 2.5in diameter, aperture should be f11 base on calculation, circa 1880,Periscope Lens is a rectilinear combination of the wide-angle variety,angle of 80 degrees
Glass Description : cleaning marks & couple tiny light scratches on edge of front element,no haze, very tiny & very faint balsam separation spots on edge of front group element
Remark :
Cosmetic Condition : EX+++
Price : $
Serial no. : 1348
Reference : Extremely Rare No.10,cover 16x20in wide open,30x40in when stop down,3.4in front and rear elements diameter, not catalogue state 2.5in diameter, aperture should be f11 base on calculation, circa 1880,Periscope Lens is a rectilinear combination of the wide-angle variety,angle of 80 degrees
Glass Description : cleaning marks & couple tiny light scratches on edge of front element,no haze, very tiny & very faint balsam separation spots on edge of front group element
Remark :
Cosmetic Condition : EX+++
Price : $
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