I have an antique articulated fish in great condition, probably Poland circa 1900 (per web search). It is very detailed and well-made, and the top head part is tightly fitting and opens and shuts well. Measures 7.5" long by 2.1/4 tall and 1" wide. Very fine workmanship and beautiful movement like a real fish. There are several markings on the tail that may provide additional information as to age or origin. There is also a photo of the tail with small hallmark stamp.