Click on the pictures to enlarge.
Comet 18 B.C.
18
BC - Ceasar Augustus -
The reverse of the coin is inscribed DIVVS IVLIVS, “the Divine Julius” The picture is that of an eight-rayed comet
with the tail upwards. The comet is a symbol for the god Julius since it was
stated in the biography of Julius Caesar by the ancient author Suetonius that a
comet was seen over Rome just after Caesar’s death which was believed to be his
soul ascending to heaven.
Link
*According to Donald K. Yeomans (Link) The comet depicted on the Augustus Roman denarius would appear to be the bright naked eye comet of 44 BC (-43) seen shortly after the assassination of Julius Caesar in 44 BC. There were no naked eye comets in 17 BC or 18 BC.
Comet (?) 1562*
Monstrant regibus astra viam. The stars show the way to kings
*According to Donald K. Yeomans (Link) there were naked eye comets in 1558 and a very short Korean record of a comet in 1567 but nothing in 1562. This jeton of 1562 denoted the star of Bethlehem recorded in the bible as a sign at the time of Christ's birth.
Comet 1577-1578
Link
Comet 1618
Link
Kirch's Comet - 1680
Link
Klinkenberg - De Cheseaux's Comet
- 1744
Link
Link
1910 Halley's Comet
Link
1986 Halley's Comet
Link

1747 Stadhouder Willem Karel
Hendrik Friso

Solar System with the Planet
"Herschel" (1800?)

Louis
XV - 1754 Silver medal (Marteau) 28,7 mm
Instruments - Observatory - Miscellaneous

Tsarina Catarina II - 1776
Bronze medal Ø
55 mm (made by
Judin)
Link
Obverse: Ekaterina II Empress and Tsarina of Whole Russia. Reverse: Solemn Jubilee of Academy of science. Picturue of the Academy buildings with obervatory. (Thanks to Marishka for the information/translation)

Tsar Nicolas
I -1835 - Bronze Medallion Ø 67 mm
Link
Obverse: Nikolas I, Emperor and Caesar (here meaning Autocrat, TSAR) Whole Russia". Reverse Pulkovo Observatory. The Pulkovo observatory was established in 1833 by the decree of Tsar Nikolas I. But the Grand Opening Ceremony was on August 19, 1839. On this medaillon it looks like the building is not finished. There should be an almost similar silver medaillon with the date 1839 from the same maker: H. Gube. (Again, thanks to Marishka)

1978
Silver gilt 38.6 mm Das Linsen Telescope

Gauss
Silver medal (gilt) 1970 (Bodlak) 44.8 mm

Fraunhofer
Silver medal (gilt) 1970 (Bodlak) Refractor Dorpat Berlin 44.8 mm
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