The toy is a mine detector.

Everything else not included in the sectionsGames for children and adultsThe mine detector toy has been produced since 1974. Judging by the details, 1974, the battery is in the middle or late 60s. While there is no data, let it be 1974. The circuit is assembled on MP-39 transistors. It works on the coincidence of the frequencies of two generators, one circuit of which is in the housing, the other in the mine detector coil. The diameter of the outer coil is 16 cm. The bar is 60 cm, according to the child's height 6-7 years. Power supply - KBS battery. Earphone. The toy is designed to search for metal products underground at shallow depths.