US$ 58.00
circa 1952
This single prism spectroscope has a simple equatorial mount adaptor for a 5-inch telescope
an illustration of 'Mint Coffee House'
This was apparently in support of the refereeing of a paper submitted to the Philosophical Transactions by Richard Owen FRS (1804-1892)
with its timber structure
A Bowl of Plums mb-code 42-61749455 circa 1952