Alan

None of those are Akro, for me.

If I can suggest something (for Birdy as well): You might start a thread looking for other collectors within x hours drive from some relatively popular locale. Take an inventory and then consider creating an impromptu marble meeting. It can be done practically anywhere. Years ago we had a very small local group that met after hours in a comic book store run by one of the collectors. It was relaxed, slow and a good place to bring marbles and look at marbles owned by others. No schedule, no agenda. I'm not a Facebook person, but I imagine that you could announce interest in several of their marble groups to build an email list. An unmet need is an opportunity!

Nothing will come close to attending a marble show and going room-to-room looking at, handling and discussing marbles. Looking at pics (not always good, well-focused ones) can only do so much. SA marble in-hand and discussing it with the seller or owner x hundreds (thousands?) of marbles builds a very deep and accurate recognition of glass colors, hues, pattern, glass movement and variations in a type that cannot be had on the Internet or in a book.

As far as I know, Mike Petura never dabbled in such things.

WVS

There can be excess colorant in any batch. Some manufacturers watched that more closely than others,

Agree.

That's a nice haul. Congrats!

Too poor of a pic to hazard a guess. Condition is key on handmades. Light surface wear is a deal killer.

Nothing worth chasing. If there was anything in the group, it was cherry picked long ago.

Yes, later. Often with chunky colorant.

They were having problems with the glass when those ran.