Copies whose estimate moved most over the period.
currencystringrequiredISO 4217 code, e.g. USD.
daysintegerrequiredmoversarray of objectrequireditemIdstring (uuid)requiredseriesTitlestring or nullrequiredissueNumberstring or nullrequiredcoverUrlstring (uri) or nullrequiredgradenumber or nullrequiredgradingCompanystring or nullrequiredvalueThenCentsintegerrequiredvalueNowCentsintegerrequiredchangeCentsintegerrequired