It was certified gold on 03/02/1988 seemingly, so presumably would have been certified on shipments, as it had peaked at #59 by that point and I'd be surprised it had managed to sell silver by then.
I disagree with that slightly- the 80s meant a run in the lower echelons easily got you to silver. Albums that didn’t even chart managed that.
I presume the reissues didn’t sell loads and loads but surely a bit to add to the pile. Any streams would go to The Greatest Hits Collection or the recent compilations I imagine.