A collective of seals is known as?

A herd, a harem (f.), a pod even a Bob (usually 2) These are the furry kind.
The smaller coins are shillings also known as a bob, 2 shillings are sometimes known as a two bob pierce (or florin) All gone since decimalisation, are there any slang names for today's coins? I confess I live in a coinless environment these days.
Back to the blip, is there a name for a collection of seals on a document?