Knife has no bolsters and "bird's eye" rivets which is a cheap means of construction, likely a depression era knife. Bakelite wasn't invented until 1906 and isn't often found on knife handles. Celluloid is an early plastic and very common on knife handles and still used in some cases today. I believe the knife here has celluloid scales, and AARC is correct that in most cases you will never know the exact age of a rusted out pocket or any other knife since the maker's marks are gone. But there are patterns of pocket knives, and mechanisms, construction components like the aforementioned rivets that can narrow it down some. Personally I toss every rusted out old knife in the trash although I am a life member of the Northeast Cutlery Collector's Association with a collection of over a thousand antique knives.