Queen Elizabeth II Stamps 1993 300th Anniversary of John Harrison (inventor of the marine chronometer) 
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Stamps are for illustration purposes only  |  | SG1654 24p Multicoloured | SG1655 28p Multicoloured |
| |  | SG1656 33p Multicoloured | SG1657 39p Multicoloured |
| Cat Ref | Stamp Description | Mint Value | Used Value | Price Guide | | SG1654 | 24p Multicoloured | £0.60 | £0.25 | | | SG1655 | 28p Multicoloured | £1.00 | £1.25 | | | SG1656 | 33p Multicoloured | £1.40 | £1.25 | | | SG1657 | 39p Multicoloured | £1.50 | £1.50 | |
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