UM... I would GO BACK ASAP !
Like hold the friggin door on this... I think you may be on a serious spot.
Like real serious... For you have found cobs and coins.
Those are NOT bale seals.
Please post updates.
PS>... This IS a BANNER post.
There is 1 Byzantine, at least 2 Roman coins, other ancients & a few foreign circa 16th C. The kind of stuff you would find in a group lot from ebay. But of course these were dug, right?