I came across this match book cover on Ebay for $1.50.

The name “Chigasaki Raiders” was adopted by the Calvert and crew as a result of several training exercises near Yokosuka, Japan during June and July, 1951.

Additional information on the Calvert’s time as a part of the “Chigasaki Raiders” the summer of 1951 can be found at:

• Robert B. Hile’s page
• See pages 8 to 12 in the downloadable document located here: https://www.usscalvert.com/2020/05/05/august-1950-to-august-1954-historical-details/
• Here’s a newspaper clipping of two Calvert crew members pictured en-route to Chigasaki beach.

There is a hand written date of 1/29/53 on the back of the cover, and possibly and name “Mensch” but I’m not certain that’s what it is.