2 vintage antique aboriginal boomerang souvenirs made in early 20th Century

Boomerang 1 - made to celebrate 100years of state of South Australia. Says 1836 south Aust souvenir 1936 and has aboriginal figures in middle holding boomerang, spears and club. Chip on bottom of boomerang nut nice thing. Made in La Perouse most likely

Boomerang 2 - probably older and simpler. Has lizard , kangaroo and plant etched into surface. Has snapped on one end at one point and reglued well

Could be late 19th Century early 20th

Dimensions on photos