Agreed! I had forgotten his literary contribution in the early days. Until 1845 he was only making single achromats and the Doomed Combine. The Petzval version came in 1845, when he became Lerebours et Secretan and started serial numbers. THe Petzval was not a major product until late in the late 1840's - as can be seen in the serial number / lens type list in this thread.
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