Our archive holds 11 confirmed sales of the Breguet reference 3820 in US dollars, across 3 auction houses between 2006 and 2025. These are settled transactions, not asking prices.
What it sells for
The median result is $6,000. The mean is $8,171. The mean sits well above the median, which tells you a small number of exceptional examples are pulling the average up. The median is the better guide to what a normal example costs.
Half of all recorded sales fall between $4,800 and $11,250. The full range runs from $4,352 to $15,000, a spread of 134% across the middle half.
How it performs against estimate
Of 9 sales where the house published an estimate, 33% beat the high estimate and 0% fell short of the low. Specialists underprice this reference more often than they overprice it.
How to read these figures
Every number here comes from completed auctions, hammer plus buyer's premium, converted where necessary and restricted to US dollar sales so the comparison is like for like. Condition, completeness and dial variant account for much of the spread within a single reference, so treat the median as market context rather than a valuation of any particular example.
