In South Mumbai’s prime areas (200102), for ready possession flats are typically:

Critically, for the region, there is often a 15-25% gap between the government’s Ready Reckoner and the actual market price.

Raw Guideline Value=Property Area in Sq. Mtr.×2001 RRR per Sq. Mtr.Raw Guideline Value equals Property Area in Sq. Mtr. cross 2001 RRR per Sq. Mtr. Step 2: Apply Depreciation Adjustments

Given the specificity of your query and without direct access to databases or documents from that period, I recommend reaching out to official sources or archives directly.