Untitled - Three Sea Animals

grey and black stone carvings
2.5 cms x 2.5 cms (1 ins x 1 ins)
Lot of three; inscribed with syllabics on bottom of each; each measures [2.25 x 4.5 x 2inches]; [1.5 x 5 x 1 and 1.5 x 4.5 x 1.5 inches]; handling marked and small chips noted