Phosphor Variations

Nearly 99% of variations come from booklet panes, they can consist of bands set either left or right, in different widths. Also variations of centre bands come in various widths including settings to the left or right of centre. Check for 8 mm & 4 mm bands, these are normally found on stamps from vending machine booklets.

Phosphor bars:

These are found on stamps from many booklet panes and consist of short bands bottom, short bands at the top, or short bands both top and bottom. Two band, centre band and side band varieties are catalogued, all are collectable.

Inset Bands:

Inset refers to bands that are inset from the perforations. Most of the inset bands are found from booklet pane material. Three types exist, these are inset left, inset right or inset from both left and right .( it should be noted that combinations of inset and short bands exist )

Notched Bands :

These can be obtained from mixed value and prestige booklet panes, they consist of small notches in the top or bottom of the band. Four types are catalogued. Notched either top left, top right, bottom left or bottom right. It should also be noted that stamps exist with combinations of short, inset and notched bands. These can be very desirable stamps and will no doubt be rarities of the near future.

Douglas G.A.Myall. Deegam publications has devised and written a reference system for these stamps, The Deegam SIN System. Douglas has kindly given his permission for these to be reproduced on site. They can be seen on the next page.

Phosphor front and back :

Phosphor is normally applied to the face of the stamp over the printed image, when phosphor is also found on the reverse of the stamp, this has been applied in error. Some experts claim that wet ink has been transferred from one sheet to another during the stacking process. Another reason has been suggested that a printing roller has picked up ink by mistake and deposited it to the rear of the sheets.                 

Phosphor under ink :

Some stamps have a milky appearance, this is caused by the phosphor being printed first, then the stamp image printed over the top. The best way to test for these variations is is to hold the stamp up to the light, the bands will appear milky and lighter than the none phosphor area.                                                 

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