Both terms are generally accepted. I have a hardcopy of the original UK road test, which said "Queen Mother" because of the luxury compared to previous Ferraris. "Queen Mary" was an ocean liner, also a hallmark for luxury.
What a great photo. That looks like a fabulous type of car, and no not the other car that looks like a 275.
I think it was shot in Adelaide during the Grand Prix . John Surtees drove a C4 in London and said he liked them better than the Daytona. I inherited the photo with the car which is now painted green .Ian appeared thrilled to receive the photo which obvious was just before his unexpected death.
I read on here that this thing sold? https://www.carsales.com.au/dealer/details/Ferrari-F355-1997/OAG-AD-13168459/?Cr=1
I saw that, though last time it said it was Sold it popped back up pretty quick. Next time I walk past the dealer I'll have a look.