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What is the Merchant Navy?
Discover the role and history of the commercial shipping fleet – and its connections with Royal Museums Greenwich
Night sky highlights - September 2026
Spot Neptune through a telescope, see the Moon in the Beehive Cluster, and mark the autumnal equinox and equilux.
Making Waves: Dr Dawn Wright
Oceanographer and chief scientist Dr Dawn Wright on diving to the deepest part of the ocean – and why we need to stand up for our blue planet
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Explore our Collection
Objects
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filters…
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Item Category
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Item Category
Item Category
Type
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Type
Type
Clock model wheel
documentary artifact: cover, first day
documentary artifact: model, clock wheel
documentary artifact: print
documentary artifact: replica, chronometer(H1)
Drawing
First day cover
Marine timekeeper
Medal
Medallion portrait
Plaque
Portrait plaque
Print
Print depicting John Harrison
Prints
Replica marine timekeeper
Replica timekeeper
timekeeper: chronometer, marine (H4)
timekeeper: timekeeper, marine (H1)
timekeeper: timekeeper, marine(H2)
timekeeper: timekeeper, marine (H4)
timekeeper: wheel, clock
War medal
Materials
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Materials
Materials
brass
brass, bronze, steel, oak, lignum vitae. Electric motor
bronze
copper, plastic
engraving, stipple
glass
lignum vitae
metal
metal: silver
mezzotint
organic: textile [ribbon]
paper
pear wood
silver
steel
stipple engraving
wood
wood: oak
Display Location
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Display Location
Display Location
Display - ROG
Display - Traders Gallery
Not on display
Creator
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Creator
Creator
Elderton, Robert
Harrison, John
Holl, W
Holl, William
King, Andrew
King, Thomas
Reynolds, Joshua
Reynolds, Samuel William
Salzer, Leonard
Tassaert, Philippe Joseph
Tassie, James
Unknown
William Andrews
William S Orr & Co
Wyon, Benjamin
Wyon, Leonard Charles
Wyon, William
Places
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Places
Places
Beckenham
England
London
Unknown
Events
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Events
Events
Crimean War, 1854-1856
Crimean War: Baltic Campaign, 1854-1855
Death of John Harrison, 1776
Indian Mutiny, 1857-1858
Exhibition
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Exhibition
Exhibition
Ships, Clocks & Stars: The Quest for Longitude
Time and Longitude
Traders: The East India Company and Asia
People
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People
People
Elderton, Robert
Harrison, John
King George II
Royal Greenwich Observatory
William Andrews
Century
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Century
Century
18th
19th
20th
unknown
Date Range
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Date Range
Date From
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1739
1745
1768
1787
1822
1835
1854
1855
1858
1970
1976
1984
1985
Date To
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1739
1745
1768
1787
1822
1835
1850
1854
1855
1858
1970
1976
1984
1985
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Harrison, John
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showing 19 objects results
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Object title/name
Object title/name (desc)
Finding reference
Finding reference (desc)
Turkish Crimea Medal 1855 (War medal)
Crimea War Medal 1854 (War medal)
10 prints relating to Harrison's 4th marine timekeeper (Prints)
Plaque
John Harrison (Print)
John Harrison (Print)
John Harrison (Print)
H2 (Marine timekeeper)
Clock model wheel
Medal commemorating the bicentenary of John Harrison's death, 1976 (Medal)
Doctor Harrison (Portrait plaque)
Commodore Harrison (Print)
John Harrison. From an Engraving by Tassaert, published in 1768, after a painting by King. under the Superintendance of the Society for the Diffusion of Useful Knowledge (Print)
John Harrison...Inventor of the Compound Pendulum & of several Time Keepers... (Print)
Indian Mutiny Medal 1857-58 (War medal)
Baltic Medal 1854-5 (War medal)
First day cover
H1 Replica (Replica marine timekeeper)
Part of John Harrison's third timekeeper (H3) (Drawing)
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