In early 1919, after bringing troops home from WWI, the Vermont was prepared for deactivation and sent to the Pacific via the Panama Canal. She stopped in several cities, including Astoria, Oregon before her final destination.
Between the cancel bars, this stamp says "Astoria" and "Ore". I haven't seen many ship postmarks. This one has a "wavy" circle, curved killer bars that almost look drawn on, and the "Astoria" letters don't seem to line up.
