http://bitcoinwhoswho.com/blog/2017/06/06/1btc-casascius-bitcoin-sells-for-usd7100/

A mint 2011 series 1 Casascius physical bitcoin sold for USD $7,100 on eBay yesterday.

First series Casascius coins are highly sought after by collectors.

During the last bitcoin price spike in 2013 (to $1250) many changed hands on eBay for about ~USD$3,000.

Yesterday's transaction represents a ~250% premium over current prices.