I did some searching and the practice of putting coins around a headdress appears to originate in Arabic culture and was not present in the Levant prior to the Arab conquests, so while this is a charming interpretation of the lost coin, I don't think it is a contemporary one.
Here is an excerpt from Near Eastern Archaeology: A Reader:
In the Arab Periods (beginning in 640 C.E.), jewelry developed more
toward styles familiar in bedouin tradition. It became the domain of
women’s personal property, given to brides upon marriage, worn as a
kind of bank account (not hoarded), and as amuletic protection from
misfortune as well as to bring prosperity. Silver and iron were the
metals prized most, and stones of reddish colors (carnelian and agate)
and amber were associated with life, health, affection, and
attractiveness. Chains with pendants, especially of discs and coins,
were worn with textiles on the head and facial areas. Necklaces had
crescents, stars, triangles, fish, lizards, toads, “cucumber amulets”
(cylinder containers), pear-shaped pendants, and an array of smaller
chains and coins. Religious phrases of praise, blessing, and
protection, especially against the “evil eye” of envy, psychic and
social negativity, were inscribed. Bangle bracelets were ornately
decorated and widened to the clip and cuff styles, and rings were
complimentary to them. The decorations were appropriate to the
embroidery work on head and dress textiles. Silversmithing for this
magnificent jewelry came virtually to an end in the 1960s (C.E.); it
had been replaced by the mass-produced gold jewelry that developed in
the 1940s and became popular in the second half of the 20th century.
Platt, E. E. (2012). Jewelry in the Levant. In S. Richard (Ed.), Near Eastern Archaeology: A Reader (p. 203). Winona Lake, IN: Eisenbrauns.