Vintage Full metal military Tank motorized German Tiger 1 WW2

Large scale remote control tank. Has some wear. It was a vintage that started to build in year 1983. My dad was not able to finish it and left so it needs some work on it It was appraised for $2000 at that time. I was informed it is a German Tiger 1 from WW2 and size that measures around 20-25" length. Anyone interest, please let me know. Willing to sell at reasonable price