If memory serves me, this would have been right before the "Pleasure Island Day" that we had to help celebrate #10's 100th birth year. Alas lettering it for "Underwood Short & Reeves" earlier in the year didn't work out because the engine was finishing an extensive rebuild, and didn't go into service until now.
July 12 would have been the Saturday. We had a number of people that remembered Pleasure Island, and #10's role in it (then it was #5). I think it was fired up in the morning, ran a trip, had some trouble where they had take it out of service for a repair, then back into service later in the afternoon. Things were so hurried that pieces of the engine were still getting put back everything time it returned from a trip: running boards and so forth.