Let’s play a game: Bone, ivory, or plastic?

[Barry Sherwood R-9037 (admin)]

I need some expert help identifying these chips that I got these from a collector in Orangevale, California during a Norcal collectors club meeting (I think). I've tried looking these up in Seymour's guide and on the chip guide, but I'm not having any luck.

Contestant #1 (Chip on left): appears overly shiny and has an edge mark that could be from an injection mold, which makes me think it's possibly plastic. But, and I could be imagining this, the surface has some barely perceptible crosshatching, but only in one small area. Weight 6g. Diameter: 37mm

Contestant #2: looks like a chipconat first glance but design has deep parts with black "ink" (or dirt) in them. Is incused, or rather it has a barely raised outer rim which appears to be why the red "stain" (doesn't appear to be paint) is worn unevenly around the edge. Weight: 7g. Diameter: 40mm

Contestant #3: much more noticeable crosshatching in the white field. Red center. Design appears to be handmade scrimshaw with small flaws and different weights and pressures appearing in the design. rim edge is rounded. and appears to have been stained solid red or brick red originally. Noticeable where in the paint, but not the edge. Weight: 7g. Diameter: 37.5mm