Trying to find a positive ID on this fuze. I've got photos only. Measurements given are 32mm long, 27mm largest diameter, 16mm smallest diameter. Japanese has been suggested, due in part to the can, the string and the brass construction, but I haven't found it in any references yet and can find no stamped markings in any of the photos - which would be unusual for Japanese. The small number of threads and relatively large top makes me think mine fuze. Ideas?