'52 SKS with early receiver and chrome bore

[BeaverMeat]

Do they exist in original form the factory? Or are chrome bores only found on early receiver '52s that have been re-barreled?

 

[Mobular]

Some '52s still had the early receiver. '51 was a transition year for chrome barrels...some were, some weren't. By '52, all bores would have been chrome.
http://www.yooperj.com/SKS-14.htm