Queen Elizabeth II Stamps 1977 Centenary of Royal Institute of Chemistry 
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Stamps are for illustration purposes only  |  | SG1026 8 1/2p multicoloured | SG1026b 10p multicoloured |
 |  | SG1026c 11p multicoloured | SG1026d 13p multicoloured |
| Cat Ref | Stamp Description | Mint Value | Used Value | Price Guide | | SG1029 | 8 1/2p multicoloured | £0.25 | £0.20 | | | SG1030 | 10p multicoloured | £0.45 | £0.45 | | | SG1031 | 11p multicoloured | £0.45 | £0.45 | | | SG1032 | 13p multicoloured | £0.45 | £0.45 | |
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