As said in the link provided above, the ‘Alaska Silverware’ spoon will contain no silver. Alaska Silver was one of several proprietary base metal alloys developed to have the superficial appearance of silver with tarnish-resistance but at much lower cost. Like other silver imitations it could optionally be silver-plated to further improve the appearance for a small additional cost. Sometimes it was, and sometimes it wasn’t. There’s not much clue to the maker and it’s a generic pattern, but companies like Sears & Roebuck shifted a lot of this stuff in the early 1900s.
The other spoon is by Reed & Barton of Taunton, Massachusetts. They operated from 1824 to 2015, initially in in conjunction with Isaac Babbitt, and then took over Babbitt’s business when he encountered financial difficulties. They then used Babbit’s expertise in metallurgy to begin manufacturing flatware under their own name, particularly using Britannia Metal (another proprietary silver imitation that contained no silver). Britannia Metal had more of a pewter-like appearance but proved to be an excellent base metal for subsequent electro-plating with silver. The spoon is Reed & Barton’s ‘Holworthy’ silver-plate pattern from 1910.