Vintage Cobalt Blue Glass Bent Neck Bottle Decanter Handle

Item comes from an estate and it is unmarked.  The pontil is ground/polished, which makes the bottle very hard to ID.  It is in good condition with no chips or cracks, but the inside will require additional cleaning.  Auction is for the bottle only.  I do not have the stopper.  There are scratches to the bottle, particularly where the stopper was and along the rim.  Bottle measures approx 15 x 5 inches on the bottom x 1.5 inches on top.