It was written at an uncertain date, in either late antiquity or the Byzantine period.

The earliest turned chairs are of uncertain date, but they became common in the 17th century.

Irmina died at an uncertain date between 704 and 710.

At an uncertain date after 1371, he became an Ottoman vassal.

There was also a third edition of a later, uncertain date, which bears the plate no. 407.

The second, and still existing, peerage is of uncertain date.

The mansard roof was added at an uncertain date, but earlier than 1871.

The east window is of uncertain date and has been modernised.

Steam's development began at an uncertain date prior to 2002.

More recent statute books list it under Statutes of uncertain date.