Who created "Grafzuyl ter gedagtenisse van den overleden Proff. Ballot"?

Grafzuyl ter gedagtenisse van den overleden Proff. Ballot was created by George Kockers in 1798.

What medium is "Grafzuyl ter gedagtenisse van den overleden Proff. Ballot"?

Grafzuyl ter gedagtenisse van den overleden Proff. Ballot is stipple engraving.

Ctrl K

George Kockers, 1798