Recently spotted online, this release was hitherto unknown. King Records had been releqasing A&M material in Japan since at least 1967, but it was thought that the first Strawbs release was in 1971.
The copyright date on the insert is 1969. There's no date on the labels, but the Japanese notes on the back of the insert mention a few dates, culminating in what looks like a reference in the last but one paragraph to the Strawbs first single "Oh How She Changed"/"Or Am I Dreaming in 1968. Furthermore, the catalogue numbering for this prefix on King Records available on Discogs and 45Cat seems to place this firmly in early 1969, probably in February(though not definitely, as 45 release dates did not always follow the catalogue numbering):
So it seems that this was the first ever Japanese release for the Strawbs.
Japanese release (*)