Thanks to you all. I initially thought such number (or at least a guess) might be in the Asahi Way or similar book (to which I have no access here ;(
Frantisek - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .