Assistance needed: I.G.K.? Tremolierstrich O Pineapple?

[bbitt]

I have this large hot water carafe show. Trying to make an ID on the marks. I see an O under a pineapple (?), a makers mark of I.G.K.? and a tremolierstrich. Any help appreciated.

https://ibb.co/wLTRc31

https://ibb.co/KXJt9xV

[dognose]

As previously requested, please embed your images.

Trev.