Wellcome H7A

Wellcome H7A

First, I apologize for the quality of this image.  I was working with limited resources.  The pill is a round, white & scored tablet with the imprint "Wellcome H7A" all on one side of the tablet.  The other side is totally blank.  The only references (two of them) I have found when searching on Google is that it could be acetaminophen.  However, these references are iffy at best.  Beyond that, I turn up nothing.  Does anyone have any ideas?  Thanks much.