Internal use only. Pre-markup calibration output. Not a valuation for consumer or commercial use.

Data quality note: Comparables are sourced from soldplate, which includes both verified sales AND Sold/Withdrawn listings (asking prices that may never have transacted). Treat mid-estimates with caution, especially when comp prices cluster at round figures (£399/£699/£899) — these often indicate inventory/asking prices rather than real sale prices. Migration to verified_sales is tracked as Phase 2.