Re: what year this evinrude 4 hp?
If you look at the first picture in the link you provided, there are two small holes where the plate used to be on the transom mount.
I don't know how it is in the States now, but without that plate, we can't get the motor registered here.
They are too many stolen motors showing up on Ebay & Co, and the first thing they, the thieves, do is pull this plate off.
No plate, no registration in Germany, without the original bill of sale.