"And when he had
opened the third seal, I
heard the third beast
say, Come and see.
And I beheld, and lo a
black horse; and he
that sat on him had a
pair of balances in his
hand.
And I heard a voice in
the midst of the four
beasts say, A measure of
wheat for a penny,
and three measures of barley for a penny;
and see thou hurt not the oil and the wine."
Revelation 6:5-6

The black horse stands for mourning and
weeping.

The rider has a balance or scale which is
a symbol of commerce.

It speaks of worldwide famine in the earth.