I have shipped several antique refractors, some larger than yours. I have bought several, too. One of the ones I bought the guy simply put the whole thing, scope and mount and tripod legs in a box. Need I say more?
The best way I found to ship is to build a wood crate. I wrapped the scope in 2 layers of mattress foam (about 2" thick, so total of 4" of foam) and put in the crate. I take the lens in the cell out and wrap it the same way, in another wood crate. I put cardboard on both sides of the cell so nothing can touch the lens, then tape it on with painters tape so it doesn't leave a residue. Everybody has horror stories about shippers, I do too. But once you get it packed, then check on shippers. It will be too big for some. And, most important, take pictures as you wrap and pack. If you do have a problem, pictures will help defend your case. If you can't build a box, find a woodworker. He can use plywood (I used 1/2" thick for the small scopes and I used 3/4" thick for the big ones.) with 2" x 2" braces in corners and all along the long side.