Exhibit Antiques has dated this piece to the 1800s.
Germany, c1802. Period of Francis II.
Condition
Excellent, age-related wear as shown.
Dimensions
Height: 13.6cm Bowl diameter: 6cm Foot diameter: 6.9cm.
Weight
121 grams
Technical Description
A rare blue Lauenstein wine glass. The round funnel bowl with a characteristic chamfered edge rests upon a knopped stem. The piece is supported by a conical foot with a polished pontil. The Lowen mark is engraved on the pontil of the glass.
..or seen...outside the Lauensteiner Glass book (see references below). An exceptionally rare example.

Historical Relevance
Hand-blown during the reign of Francis II, the last Holy Roman Emperor due to its dissolution in 1806 as a result of Napoleon’s victory over Austria at the Battle of Austerlitz on 2 December 1805.
Relevant References
Lauensteiner Glas, 1701-1827: Ein Beitrag zur Wirtschafts- und Kulturgeschichte Niedersachsens By Alheidis von Rohr - Page 125.
Exhibit Antiques has dated this piece to the 1800s.
Specialists in 18th & 19th century antique glass
You can view the stock and full dealer information on the Exhibit Antiques Profile Page