1.) When did the black-and-white barber pole mold box first appear? These were still cardboard boxes. The factory instructions that came with one of mine has a zipcode, so it must have been around 1964 or later.
2.) Do molds from the black-and-white era generally meet or exceed specs in so far as size is concerned? Put another way, are the black-and-whites of the same quality as the Ideal Generation (most seem to agree that Ideal molds are great, and that has been my experience as well - no undersize problems).
3.) One of my black-and-whites has on the box "Group A," "Group B", or "Group C." One of these will be checked. What do the Group designations mean?
4.) When did the factory start adding a "0" to mold numbers with only five digits? Example: 31141 became 311041.
5.) When did the quality of Lyman molds start to go South? This in regards to undersize and erratically sized cavities. Unfortunately my junker Lymans did not come with boxes so I can't connect the dots.
6.) Did the orange plastic boxes immediately follow the B-W barber pole boxes? If so, when? If not, what came in between?
I've read the Ideal sticky and several subsequent threads on Ideal/Lyman, Thought I'd get some consolidation here from those who know the company's molds well. Called Lyman this morning and started to ask questions. They're apparently OTL on product history.
Please feel free to add any further details that might enable a potential Lyman mold buyer to make better informed purchases.
Thanks.