Gorgeous! That's in fantastic condition; best I've seen. The paint is very fragile as the frame is fully chromed. I can't believe yours is in such good condition. Try messing with your camera's focus settings.
The Ultra 6 freewheel is not original, though it could have been a new, shop supplied upgrade. The origial freewheel was a Schwinn Approved (Suntour) 14-32 (or 34t - I don't recall) 5 speed with the largest two cogs being skip-tooth.
I purchased my World Voyageur last year in Oak Park. I suspect mine was a custom order job as I know of no other 25" World Voyageurs. I'm currently building an original Shimano high flange/Araya 27" wheelset for it as it came to me with unoriginal wheels. Yours should have a serial number on the BB.
If Budget Bicycle were selling that bike today they'd ask $1,800 for it judging by their eBay auctions. Ha!
Great bike. Enjoy it!