counter for thin, flat objects (e.g. sheets of paper, plates, coins); counter for portions of gyōza or soba; counter for ranks; counter for wrestlers of a particular rank; counter for fields or rice paddies; counter for palanquin bearers
Examples (4 in total)
私は銀貨をすうまい持っている。
I have several silver coins.
彼は硬貨をすうまい私のポケットにつっこんだ。
He thrust some coins into my pocket.
すうまいの古い硬貨の入った壷を見つけた。
I found a pot in which there were several old coins.