Those opening titles indicate that that's a TV print.
Here 's another Mighty Mouse the same seller has put up, one that does have original titles.
Here 's a 16mm IB Tech of "Ready, Woolen and Able" (1960). And
here 's a real oddity: a 16mm reel containing "Mickey and the Seal" (1948, IB Tech), "Mickey's Circus" (1936, IB Tech), "Homeless Hare" (1950, Eastman), and "The Stupor Salesman" (1948, Eastman).