U217 Only known from Sheet. This is the reprinted PCP1 issue - see note below.
Stamp Detail
| Tag | Description |
| Issued: | 07.1980 | |
| Deegam: | 130.1.2 |
| SG Spec: | U217 |
| Condition: | MNH |
| Perf: | 15 x 14 |
| Format: | Sheet |
| Printer: | Harrison |
| Process: | Photogravure |
| Paper: | PCP1 |
| Colour: | Grey Green |
| Notes: | | .
.
- Under UV the gum on 1979 U217-E appears much "whiter" than the later 1980 U217 which is "dull" in comparison although they are both PVAD.
- The 1979 issue - U217-E - is known as the PCP "experimental issue" as when it was tested by Royal Mail it was considered to be sub-standard but accepted by their quality assurance division.
- When it was re-printed in 1980 - U217 - it was changed to PCP1 which apparently has a brief afterglow, whereas the original had none.
To be honest I can find no "afterglow" difference in my tests.
- It will be no surprise to note that SG doesn't even recognise the difference.
This product was added to our catalog on Saturday 01 February, 2014.
 Cyl 1 ND Single CD.jpg "1983 GB - SGX961 (U278) 20½p (H) PCP Cyl 1 No Dot Single CD MNH")
