Gorham

Can anyone help with reading these Gorham marks? Is this silverplate? If so, does it have any value? It appears there is a rooster mark on the bottom right, the number 35 on the right and the copyright date is 1883. (Does that mean it was made in 1883 or that this method of silver soldering was copyrighted then?)
Many thanks for any insights.
IMG_0762.JPG

p.s. my aunt was told this tea set was quite valuable but the info I’ve seen so far suggests otherwise.

Any chance of a bigger and legible picture of the marks?