US$ 80.82
A rear view of the cast iron grinding tool used to produce the speculum (mirror) of the reflecting telescope at Birr Castle
by Robert Stawell Ball (London
A front view of the cast iron grinding tool used to produce the speculum of the reflecting telescope at Birr Castle
The interior was destroyed by fire during the blitz and restored in 1960
the right is not visible
Marine Diatom Size:S: 40 x 30cm A rear view of the
US$ 80.82
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