In the codes used below the combinations RL and RP stand for rectangle landscape, and rectangle portrait respectively. SQ is for square. They are followed by the rounded size of each model in millimeters. The sizes have been derived from the original trade names used by the Verwoerd workshop, and actual sizes may differ by one or two tenths of a millimeter. The silver mounted model RL9x14.5 is an example of the many variations produced by Schoonhoven silversmiths. Furthermore, the caption shows the number of pieces sold, and the years in which they have been produced. Although we believe that these figures are a useful indication of the relative production sizes, they may be subject to change on the basis of further research results.
Rectangle - landscape
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RL 10x15mm
722 pcs
1953-55
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RL 9x14.5mm
49475 pcs
1950-63
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RL 7.5x15mm
30600 pcs
1962-74
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Rectangle - portrait
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RP 10x15mm
2942 pcs
1953-60
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RP 9x14.5mm
11817 pcs
1950-63
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Square
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SQ 12mm
23850 pcs
1962-74
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