The slate ("clapstick") used to begin a 'take' in Ricky's screen test is marked as follows: EMPIRE Prod / 9-17 / Director: Aldworth / Cameraman: Wester / Ricardo Test / Take (1, then 2, then 3, and so forth). "Aldworth" may refer to Jack Aldworth, assistant director on this episode. 9/17 could be the actual shooting date, as the episode aired for the first time on 15 November 1954.
The chain lock that Fred installed on the Ricardo's front door in the previous episode is no longer there.