Vintage amethyst Blenko crackle glass decanter bottle w/ fancy stopper

Mod 60s vintage crackle art glass decanter, Blenko, Viking or similar. This is 12 1/2" tall overall, with great retro shape!

There's a chip or maker's flaw (we'd guess probably the latter?) to the bottom of the stopper, as shown in the photo - no other flaws, this looks very nice.