DALBY'S CARMINATIVE - Very unusual glass web inside!

[AAAuctions]

just wondering if anyone has seen this happen inside a glass bottle before. The molten glass has almost made a web inside the bottle!
(if you want to bid on it, it's in this current auction AAA11 which ends tomorrow 4pm (NYT) April 14th '18 (Lot #323)

http://www.aaauctionsltd.com/auction-11/cgi-bin/CATALL.CGI

 

[RIBottleguy]

Best guess is a giant bubble that burst when the glass was still hot. Adds some nice character!

 

[sandchip]

I agree. Great looking bottle!