This transactions shows coins being moved after 7,5 years. The coins were accumulated during mining and never moved, until today... It's interesting to note that only BTC is moved, not BCH. Of these 3000 Bitcoins, 1000 BTC were spent. I'm hoping it's an oldtimer selling BTC to accumulate more BCH...
https://blockchain.info/address/1FWcYHEL8sMLrw2zjMzQ7D3BfpnZGEWSbR