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.............................................................No.1 .............6x5
.............................................................No.2.......... 81/2x61/2
.............................................................No.3...............10x8
............................................................No.4............12x10
...........................................................No.5............15x12
...........................................................No.6............18x16
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Return to Triple Achromat Settings
Lens Book, Volume 1. 1863-1864
Serial numbers 5000-7000