While a specific number or percentage is impossible to determine, there are other factors which can bring fresh material to the market. This includes families of deceased collectors who just want the stuff out of the house, collectors who die without a will or close family, divorce or separation (irate ex-spouses sometimes set spitefully low prices), change of interest, moving / downsizing sales, loss or decrease of employment, etc. Fresh material enters the sports hobby daily, although finds such as the E-98 find are rarer than honest politicians....
