Although it’s been almost four months since the OP originally posted, I’ll throw this out there. I’m surprised no one mentioned Montana Vintage Arms scopes. I have two I use for my BPCR rifles, they are outstanding pieces of workmanship. The Winchester “B” series scope in their lineup would no doubt look very period correct - although one would need a gunsmith to drill holes for the mounting blocks. It is possible the Series 3000 28” (or a longer) scope could be fitted with the Malcom Silhouette mounts that fit into the dovetails of the barrel sights - no drilling required. MVA shows that option for 32” and 34” barrels. These scopes are usually mounted to single shot rifles, but I don’t see why they wouldn’t work with a Marlin. Both can be had up to six power.
Just a thought - I also have an 1895 CB and use a Marbles peep with the factory brass bead up front.
OVW
