Good morning - the car does not have a badge at this point, and as she is such an early car (#914) I am assuming it was originally a 350 badge. Good point on condition of paint under the old badge. Looks like it has been missing for some time.have you removed the 450sl badge to see about shadowing or damaged paint? i would be worried that if you changed the lettering, it would be visible where the old letters used to be(tho i spose only the 4/3 would be different)
I have one, not in the greatest shape, a bit dinged up on the chrome, needs the black bar underneath the lettering repainted..looks good on my little shelf on the wall tho..