When using "circa" based on a Hebrew date,  LC prefers to cite only  the earlier of  the  two possible Gregorian dates in the date portion of the heading..

For example, in the case of "circa 595", one should use ""ca. 1834" and not "ca. 1834 or 5".
Moreover, if the person died after 1899, he  is  a 20th-century person, and  as  such is not allowed to have *any* imprecise dates in  his heading (unless to break a conflict), such as "ca." or "fl." or dates with "?".
This is discussed at the beginning  of  RI 22.17:
"For  persons living in  the twentieth century, the date upon which the heading is based should be  a precise one."
Thus, if the death date is known, only it should be used in the date portion of the heading (e.g., "d. 1917" and not "ca. 1834-1917")  Nonetheless, a Hebrew date which has to  be  expressed as  two Gregorian years is considered "precise" for the purposes of this rule.)