Allow Accumulated Depreciation/Amortisation accounts in journals

Great Discussion guys. I really enjoy this.
Using the above data. I think, IAS 16 will require a recognition of the Reverluation Reserve of 650 and Revalued Asset of 1650. i.e

1,000 + 650 - 450 = 1,200 Asset and 650 Revaluation Reserve. There is no need to Write off the Accum Depretn.