Collin, I think it was mass produced. Not as mass produced as 50/1.4 but mass produced nonetheless.
Boris who is 42 with 3 years experience :-). On 29 Dec 2016 03:52, "Collin Brendemuehl" <[email protected]> wrote: How many of these were made? Is there any relationship between the serial numbers and the dates? -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

