RARE BLUE GREEN GLASS CASE BOTTLE. PONTIL.BALTIC REGION? HALF POST METHOD c1760. For Sale

A flared lip square case bottle blown by the German half post method.
The colour suggest a Baltic origin; Norway ? Sweden ? North Germany? Russia?
It has a slightly raised base and stands on four corners which are a bit worn.
There is a sharp Blowpipe pontil scarr ( 3.1cm in diameter)
The Blue/Green glass has many small bubbles and a few inclusions.
The sides sag in and it retains its full original surface gloss.
Height. 27.5cm. Width. 10cm square. Weight. 1405 grams. Volume. 1538cc.
Mint to near mint. No cracks , stars , or chips.
Postage. with tracking and signed for. USA. $45. Europe. $ 26.