This is something I regularly search for and more and more often I’m finding people posting code versions when all I really want is the URL parameter to force it. So luckily I stumbled across SharePoint Den page that posts the following
http://site/List1/Forms/DispForm.aspx/&InitialTabID=Ribbon.Read
So cheers chap, the more places this version is shown I hope helps someone else find the way correct for them
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