This is a Jutte #1 with a a length of chain with a weight on the end of the shaft.
Little is known about them, however photos of these type of jutte appear in the Books, such as Edo No Jutte Vol2 and Jutte Hajakensho Torimono Dogu.
Jutte Approximate Dimensions.
Jutte - length 40cm
Chain - blackened - 50cm
Fundo - rectangle - see photo