BROOKFIELD Glass Insulator -- AQUA with AMBER SWIRLS & haute qualité unique flaw

I have a Brookfield glass electric insulator for sale. Nice aqua color with amber swirls and I believe its quite rare due to a unique flaw and some bubbles.

• There is one large white "flaw" on the skirt right below the Brookfield logo. Ive heard of white crystallized flakes described as "snowflakes" but this is larger than any Ive seen and has a more distinct look and defined edge. Ive included several pictures, but please feel free to reach out if youre looking to see anything in particular.
• There are a few bubbles, the largest are on the dome but there are also several on the skirt and and wire groove area.

There is a fine line on the inside that goes up from the bottom vertically behind the Brookfield logo. Pleas see pictures. It seems to have a number 16 on the top of the dome when you are looking at it from inside the insulator.

I am not an expert in these, but my understanding is the imperfections make this quite desirable and rareand are a result of primitive manufacturing techniques. Im looking for education/more information on this, so if you know more about this please feel free to contact me as well.

Please see pictures, thanks.