4-5 febtuary finds

[Nutriasub]

The first day was on a site i thought it was going to be great, lots of pottery everywhere. Turns out it had been cleaned. I found one maravedi from the 1600's big, that had been hammered probably on the 1700's, very corroded. Also big piece of lead and one thing with a S engraving and one hole in the middle which I dont know what it is. Looks pretty though.

Then changed to a new site, where I had found some old pottery, I do not know what period is the pottery from.
Well I dug this things, the first three are lead, with strange shapes, anyone could give a clue if they are anything?

then the little coin, its very damaged, from the 1600's. Cannot tell the date.
I would appreciate any kind of information about pottery and lead finds.

Thanks