Herman and Lily both seek jobs through The Cleaver Employment Agency. This is an obvious nod to Producers Joe Connelly and Bob Mosher's previous hit show "Leave It To Beaver".
From the date on Lily's check ('Sept. 1'), presumably the Munsters were married on September 4, 1865 (September the 4th was a Saturday in 1965).
USD 1,000.00, in 1965, would be worth approximately USD 8,030.00 in 2018.
The historic origins of wedding anniversaries date back to the Holy Roman Empire, when husbands crowned their wives with a silver wreath on their 25th anniversary, and a gold wreath on the fiftieth. According to a list compiled by librarians at the Chicago Public Library's Information Center (December 2000), engraved marble or granite would be the traditional 90th Anniversary gift. Unfortunately, the list ends there.