The stolen miners are not that old, a Bitmain s21 and a Canaan Avalon miner, the mini home heater with 37TH, I believe the S21 is the more costly one, so far the criminals aren't caught yet but the manhunt for them is on, I hope something will come up because it took a lot of time before this my friend can gather the money to buy these miners, he always ask me first before he go for any.

The serial numbers was never recorded or snapped with camera because he never had any reason to do so, @Everyone thanks for your concern and contribution.