Four mirrors, six dotaku (bell-like objects), three spearheads, and an arrowhead were analyzed by wet-chemical, emission spectrographic and/or atomic absorption methods. Three Chinese mirrors contain about 20% tin, whereas the mirror copied in Japan after a Chinese one contains less tin, about 13%. The bell-like object of the old style, No. 5, contains much tin, about 12%, and the tin content decreases with the transition from the older style to the new one. A spearhead and an arrowhead contain only a low percent and are not hard enough to be usedas weapons. High nickel and antimony contents of the dotaku excavated in Kono, Kishiwada, Osaka prefecture, and of a spearhead found in Antoku, Fukuoka prefecture, which were reported in 1918, were found to be incorrect by the present study. -- AATA