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Important, one-of-a-kind T. Cooke and Sons 4″/F18 Photo Visual triplet: £17,500

Museum quality 1890’s T. Cooke and Sons 4″/F18 PhotoVisual triplet. This museum piece is a rare example of this lens; widely considered to be the first apochromat. A solid brass tube on a Cooke EQ mount complete with H. Taylor weight driven clock drive, original connecting rod/Hooke’s joint & original iron pillar. The objective lens is clean and clear and is mounted via a Cooke bayonet mounting ring.  The equatorial mount features original brass & silver setting circles with fixed magnifying lenses on both axes.

This is a significant opportunity to obtain a historically important instrument.  More pictures available for serious inquiries only please.  Shipping is possible.




Skylight AR101.15 Anniversary Edition: $6500 AUS

This instrument is one of only 3 x AR101.15’s in all brass I built and is the first of my AR101.15’s that I have ever seen available on the 2nd hand market.  This rare opportunity is available in the Melbourne, Australia area.  Shipping is available at the buyers expense.  Please contact me for more information or seller details.

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