Ishiwata 017 appears to have been developed in 1973, but the gold transfer on yours dates from 1976 to early 80's. Earlier ones were a yellow transfer as seen here in 1974 (below).
http://cyclespeugeot.web.fc2.com/catalog/ishiwata74/ishiwata74_03.jpg
http://cyclespeugeot.web.fc2.com/catalog/ishiwata74/ishiwata74_03.jpg