A more thorough explanation:

Valentia (və-LEN-shee-ə) is a legal term that comes from the Latin word valere, which means "to be of value." It refers to the worth or value of something.

In the past, this term was often used in indictments for larceny to express the value of the stolen items. For example, if someone stole a horse worth $500, the indictment might say "the defendant did steal one horse of the valentia of five hundred dollars."

Today, the term valentia is not commonly used in legal language, but it is still important to understand its meaning in historical contexts.