I have asked for serial # help on several occasions, and responses from those in the know have always been prompt. Since I seem to be gravitating toward Smiths in a substantial manner, I think I should have my own copy of whatever that resource is. For example, during the past year, I picked up pristine model 10's- a 10-6 and a 10-8. I would like to know exactly what those changes were all about... Is there a single source for such information? Thanks for any advice..
Gene
Gene