These days you can easily recreate the CAL book using an NanoVNA.
There was an article posted about it somewhere, (I thought here).
73 - BILL KA8VIT / W8COD
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Bill Chaikin, KA8VIT
Chief Radio Operator
WW2 Submarine USS COD SS-224 (NECO)
[email protected]
http://ka8vit.com
http://www.usscod.org
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The LM and BC series frequency meters might be more popular than we think... I had one stolen from my table at the Sellersville, PA hamfest sometime between 2010 and 2020. Absolutely astonished me. The meter did NOT have the CAL book on the front, I had the CAL book with me in electronic format (it's a complicated story as to why I didn't have the physical CAL book (for this serial number) ). The CAL book remains in my electronic archives...
Bill KA3AIS