Well, here are the items, all prettied up (but I ran out of silver polish before I could finish, so some pieces aren't perfect).
These are just short of 2.5" high, with a 3" diameter bowl. What on earth is it? They are marked inside the bottom of the bowl "Oneida Silversmiths".
Coffee set, marked WR (William Rogers?), with "Quadrupled" arched above the initials, and "New York below. Maltese cross at left, and keystone at right. Numbers "912" below "New York". Each piece also has a hand-scratched set of numbers -- 3-62-1271. Coffee pot is 7.5" high, Creamer and Sugar about 3.75" high. The creamer has a dent, and the silver has flaked off along a perimeter approximately half the perimeter of a quarter.
I'm pretty sure the knife and fork are stainless, although they have no markings anywhere. The ladle is marked "GEBRHEPP90" and the number ten in a circle, plus "Hotel Porta Nigra".
The tray without the handles is marked "Silver on Copper", and is 12.25" long and 9.25" wide. The one with handles is unmarked, and is 12" long and just short of 8" wide.
Marked "Wm Rogers" between a star and what looks like an eagle, with numbers 272 below. About 15" diameter.
Covered bowl, ran out of polish before I could do the bottom, and so far I can't see any markings. Bowl is 10.5" diameter, and about 6" high with lid. Edge design matches the 15" diameter tray above.
Butter dish, heavily used, so the bottom interior is nearly stripped of silver, down to the copper. About 7.5" long and 4 1/8" wide, surmounted by....well, I'm not sure. It looks a bit suggestive, actually -- a pickle swathed in plantain leaves. Maybe it is meant to be a squash in squash leaves?
Pierced basket, marked "Standard's Co, of Toronto Limited, Canada, E.P.N.S, 105/11". 11.5" long, 8" wide, 3" high to basket (9" with handle raised).
Pair of trays with grape vine and grape cluster motif along edges. Marked "Federal Silver Company Silver on Copper". Round one is 15" in diameter with 2.5" handles each side. Rectangular one is 16.5" x 12.5" plus 2.5" handles. Round tray has damage to plate, with missing silver.
What do you all think the values might be? -- and are there any secret treasures here? Or, as is more likely, will I be lucky to get back my $30? HA HA!