BLOCH, Marcus Elieser (German 1723-1799), 3 Various Engravings. 'Cottus Quadricornis' (19x30cm); 'Ostacion Cornutus' (18x32cm); & 'Squalus Centrina' (18x35cm). From 'Ichtyologie, our histoire naturelle, generale et particuliere.' Engraving (3) Estimate $200-400