Montegrappa Fortuna Missing Correct Finial? - Fountain & Dip Pens

I bought this Montegrappa Fortuna from Shopworn on sale for $55. When I got it I noticed the finial is plain which I thought was sort of odd but that is how they show it on their website. When I checked other pictures of this pen it has their typical 1912 finial. Is this a fake? It feels and look

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