Glass double head-shaped flask

Translucent colorless with greenish tinge, with handle of indeterminate color.
Unworked, uneven, and everted rim, with slight bulge below; funnel neck; body in the shape of a double head; oval base with flat bottom and rounded, slightly bulging edge; handle wound round neck anticlockwise to form thick, round coil, drawn out horizontally, turned in and down, and then attached to side of body.
On body, two heads, back to back, with similar but not identical features (one smiling, one serious ?): hair rendered as three rows of evenly-spaced knobs framing the faces to below chin level, arched brows, prominent bridge to nose, small mouth with parted lips, chubby cheeks, and rounded chin; on handle, three tooled crimps projecting outwards.
Two large holes in sides of body; some bubbles and blowing striations; dulling, pitting, iridescence, and patches of thick creamy weathering, and some soil encrustation on interior.