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- Thu Nov 16, 2017 11:56 am
- Forum: Machins
- Topic: Phosphor printed on both sides.
- Replies: 0
- Views: 22933
Phosphor printed on both sides.
The above error appears several times in Gibbons' Vol 4 Part 1, and is usually associated with booklet panes, especially Prestige panes. Is the phosphor under the gum and if so is it detectable under a UV lamp? If over the gum is it still detectable? I have several Prestige Panes where it appears th...