I asked the same question about a Case Classic ..... got this answer from Case Tested ( Alex )
"From my understanding, there is no such a variety as 'green rogers bone' .... only brown, lighter brown or reddish.
This would be a good question for Steve Pfeiffer.
dean, I can't speak for Case Tested but, I believe he may have been referring to the Case Classic line of knives. There are many Tested XX era Case knives that have regular jigged green colored bone handles and a expensive price to go with them depending on condition. I don't think I've ever seen a green colored rogers jigged bone handled Case knife from any era of Case knives, be it a regular Case knife (Tested XX era, Case XX era, or Case USA and the dots era) or a Case Classic series knife. That doesn't mean there were none ever made, just that I haven't ever seen one. Rogers bone has a different style of jigging than regular bone has. I have a Case Classic knife that has what I would call rogers jigged bone handles in MHO and many Case knife collectors have agreed that it looks like rogers jigged bone to them too, and they called it's color honey-green but the knife is listed as honey colored banana bone.
go figure? I have to go by what the maker says it is on it's C.O.A. and not what I and a few Case collectors think it may look like. The maker built it, I just bought it. There were some regular jigged green colored bone handled Case Classic series knives made but none that I have ever seen or heard called rogers jigged green bone. I think the bone on the OP's knife is pretty bone in MHO.