This is the difference between CB (convertible booklet) stamps and the MDI (Minnesota Diversified Industries) booklets |
CB stamps start and end with a "Valley" at top, MDI's with a "Peak". |
See MDI page |
The Convertible Booklets:
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The pane plate numbers are: V12211, V12212, V12312, V12321, V12322, V12331, V13322, V13831, V13834, V13836, V22211, V23322, V23422, V23432, V23522, V34743, V34745, V36743, V42556, V45554, V56663, V56665, V56763, V57663, V65976, V78989 There are two different backings: "Stamps Worth Saving" and "National Domestic Violence Hotline". As far as I know, the panes of 20 occur with or without divots, the MDI booklets come with divots. To me it seems that the stamps from the panes of 20 can be distinguished from those from the MDI booklets by the sequence of valleys and peaks in the die cut. |
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The pane stamps start with a valley at the top left corner of the horizontal die cut and end with a valley, the MDI stamps start and end with a peak. All other sides corresponding. | |
Differences in the die cut: Divots | ||
Die cut pane of 20 without divot |
Die cut pane of 20 with divot |
Die cut MDI booklet with divot |
All stamps from a | pane of 20 without divots. | |
All stamps from a | pane of 20 with divots. | |
Convertible booklet of 20 2920a | ||
"National Domestic Violence Hotline" backing and a pane of 20 with a label of a convenience store. These are known with plate numbers V13831, V13824, V23422, V34745, V36743, V42556, V45554, V56663 and V78989. | ||
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