Due to the scarcity of the surviving samples of Jurchen writing, it was often difficult to determine for the 19th-century (or sometimes even 20th-century) scholars, whether a given inscription was in the "large" or "small" Jurchen script, or whether it was in Jurchen script at all.
The pioneering work on studies of the Jurchen script was done by Wilhelm Grube in the end of 19 c [REF].