Original tyres?

[Craiglid]

How would I find out what tyres this bike was produced with? As far as I know everything else is fully original but the tyres don't seem correct. The front is a Michelin 80-19 21 road looking tyre and the rear is a 3.25-19 54v enduro looking tyre. Also where can I buy the genuine tyres from please, thank you for any help anyone can offer.