Viking Allrounder Serial No. 120263

Unless I'm badly mistaken that catalogue does not show those brake levers on the Allrounder picture - though they do look like the ones on the drops in the centre picture which also has a matching crankset. So, I'd still think this bike came with drops.

The Allrounder is listed as coming with a hub gear, but single freewheel does seem to be also period correct.

Check this out http://classicvikingcycles.com/wp-content/uploads/2011/11/1959-Viking-Catalogue-p07.jpg it says GB Alloys.