it is extremely rare to find a factory barrel (that hasn't been shortened, or a slug gun), with "no chokes".
If what you mean is there are no screw in choke tubes, then, yes. But that's not the same as "no choke". Prior to the advent of the screw in tubes, the choke was simply made into the barrel.
Typical for a double gun is the left barrel choked a degree tighter than the right barrel. Common combinations are cylinder/improved cylinder, improved cylinder/modified, and modified/full.
Special order guns (more common in the pre WWII days) could be any choke combination the customer wanted. I have my Grandfather's 1909 Flues model 12ga, and its choked FULL/FULL, per his request.
There should be a marking or a code on the barrels (somewhere) giving the chokes. Although there may not be. I'm no expert on SKB but a 1980s gun ought to be marked, somewhere, though it maybe something we might not recognize at a glance. might be something like a * or ** somewhere, or some other symbol.
Nice looking gun, looks unfired, but might have been shot a few times, then cleaned, no way to know, really.