Dino in Reno;
I assume you are referring to the hard rubber, shotgun style butt plates on the Model 1893, and other models. There are two different styles of hard rubber style butt plates used on the Model 1893. The more common MFACo surrounded by the words Marlin Safety in a circle, and the monogram MFA Co style, Ballard hard rubber butt plate. The latter being seen far less often than the commom MFA Co in the circle.
Overall. maybe a fourth of the production had hard rubber butt plates if that much. The factory records are not always complete, and the hard rubber butt plate is not always listed amoung the features of the gun. The hard rubber butt plate is shown as "RB" for rubber butt in the records. Since the records are so incomplete, it is really hard to say with complete certainty.
I hope this helps.
Due to the increasing cost of ammunition, there be no warning shot!
The growing federal deficit = generational slavery to the national debt.