Classic f/15 refractors take on a whole new meaning at 4" and above. I haven't posted a classic scope in awhile as I've been working hard on whittling down to my final fifteen or so. I was down to three 4" classics (one an f/12). Now I am back up to four. Where I used to plan for an hour setup and hour take down for one of these, for this latest one I think things will go much faster on setup and will get to using much more quickly. The scope was available locally so didn't have to worry about packing and shipping. Probably an early one from mid 50's. Mount is complete and probably does need some cleanup, and the OTA is certainly in need of paint or powder coating; but I bought it to use and will attend to those kinds of details later. The original Unitron lens had issues and I look forward to messing with that. This one came with a Jaegers lens of Baker air spaced design. Spot diagrams for the two lens designs are pretty much the same so I'm pleased that this scope gives me the opportunity to try one of those. Only other accessory of note accompanying the scope is the 10x42 finder. Have some other Unitron stuff not associated with a scope and I'll look through that, but really this isn't so much collectable as kind of a nice workhorse grab and go. The mount itself isn't unique for a 150, but the legs have clamp locks that are original and that probably makes them Polarex from what I understand. Typical wooden clamp-on tray. Hopefully it will see Jupiter tomorrow if skies are clear.