Queen Elizabeth II Stamps 1987 300th Anniversary of the Principia Mathematica by Sir isaac Newton 
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Stamps are for illustration purposes only  | | SG1351 18p Multicoloured | SG1352 22p Multicoloured |
 |  | SG1353 31p Multicoloured | SG1354 34p Multicoloured |
| Cat Ref | Stamp Description | Mint Value | Used Value | Price Guide | | SG1351 | 18p Multicoloured | £0.50 | £0.15 | | | SG1352 | 22p Multicoloured | £0.75 | £0.75 | | | SG1353 | 31p Multicoloured | £1.25 | £1.50 | | | SG1354 | 34p Multicoloured | £1.25 | £1.25 | |
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