1975 Royal Greenwich Observatory 57mm Sterling Silver Medal Set, Gorgeously Toned $4 9802 oz AGW)

9802 oz AGW)

Reverse: Interest paid stamps

000 and on par in rarity to its other semi-key counterparts

Obverse: The 'Christian VIII' on fire sinking

1621 oz ASW Diameter 24 mm Edge Type Reeded Description Obverse Crowned bust left Description Reverse Arms

1975 Royal Greenwich Observatory 57mm Sterling Silver Medal Set, Gorgeously Toned $4 9802 oz AGW)Limited to just 1,000 strikes, these . 925 Silver Medals were struck by the Royal Mint in honour of 300 years of The Royal Greenwich Observatory. Medal #1 celebrates the Ramsden sextant (Jesse Ramsden) Medal #2 celebrates the armillary sphere. Medal #3 celebrates the first marine timekeeper (John Harrison) Each medal weighs 3. 2 troy ounces for a total of 8. 88 toz net pure silver. For as good as these look in the pictures, I think they look even