Original rendering, Original work, not an official product photograph
H4
John Harrison finished H4 in 1759, a large silver timekeeper whose trial at sea settled the longitude problem. It is in the Royal Museums Greenwich and has never been sold.
- Brand
- John Harrison
- Watchmaker
- John Harrison
- Reference
- H4
- Case
- Silver
- Chain
- Silver chain
- Movement
- Marine chronometer with a temperature-compensated balance
- Year of release
- 1759
- Number made
- 1
- Original price
- Admiralty trial
- Current value
- No recorded sale