public static function get_currency_code_fallback() {

		// Check if we have a value set from Tribe Commerce.
		$currency_code = tribe_get_option( static::$legacy_currency_code_option, static::$currency_code_fallback );

		// Duplicate the currency code in the Tickets Commerce key.
		tribe_update_option( static::$currency_code_option, $currency_code );

		return $currency_code;
	}