Summer is the quiet quarter on paper, but the UK auction houses pack the second half of July and most of August with serious sales. If you collect British, this is when you watch closely — keys appear, hammer prices wobble, and a few quirky lots slip through with no underbidder.
Below is my watch list for the summer 2026 UK numismatic calendar. I've grouped by house and called out the categories I think will be most competitive (and the ones where I think there's value to be had).
Spink — Summer Coin Sale (London, late July)
Spink's late-July British sale is the heaviest hitter of the season. Expect:
- Hammered and milled gold — sovereigns, guineas, fives — particularly from named collections. The Pistrucci St George sovereigns from 1817–1825 always draw a crowd; see our Pistrucci St George guide for context on what the design grades and prices look like.
- George V proof sets — 1911 long set in problem-free condition has been climbing for three years. Realised prices for the 1911 Specimen Set in original case are now routinely £18,000–£28,000 depending on toning.
- Patterns and proofs of the 1953 Coronation — the Coronation crown trial pieces are quietly catching attention again.
Strategy note: Spink's published estimates run conservatively. The action is usually 20–60% above estimate on key lots. If a lot you want is "estimate £800–£1,200" and it's a clean key date, you should be prepared to bid to £1,500+.
Noonans Mayfair — July British Coins
Noonans (formerly DNW) runs their main British sale in late July. Their strength is the middle market — £200 to £5,000 lots — which is exactly where most private collectors actually buy.
What I'm watching:
- Pre-decimal proof sets in original RM cases. 1937, 1950, 1951, 1953 sets in clean shells have been firming up for 18 months.
- Key decimal 50ps slabbed by PCGS or NGC at MS66+ — particularly the Olympic Football 50p, the original 2009 Kew Gardens 50p, and the 2008 undated 20p mule. Top-pop graded examples now command 5–10× a raw EF/AU coin.
- Hammered shillings and sixpences from named collections — these are still genuinely undervalued for the rarity involved.
The Noonans website lets you bid live or by absentee — for serious lots, register and watch the live feed even if you don't bid; it's the best free education in coin pricing you can get.
Baldwin's — August set
Baldwin's runs through Stack's Bowers Galleries now, but the British team still curates a strong August sale. Their wheelhouse is British gold and ancient British — Celtic staters, Anglo-Saxon pennies, hammered nobles. If you're casually interested, this is a good auction to watch even without bidding; the catalogue itself is an education.
Specific watch items:
- Common-date sovereigns at melt-plus-small-premium — Baldwin's tends to throw in lots of mixed-date sovereigns at the back of the catalogue, and these can hammer right around bullion if the room is quiet. Worth a low absentee bid if you're building a stack.
- Britannia proofs from the 1987 launch series — see our Britannia bullion guide for context.
- Maundy money sets — small but consistent demand from collectors filling sets. See our Maundy money guide.
Heritage / DNW / smaller houses
A few houses that punch above their weight:
- London Coins runs frequent sales and is excellent for raw mid-grade material at sensible levels.
- Coin Cabinet specialises in slabbed modern issues — this is where to look for top-pop modern coins at slightly tighter spreads than the big rooms.
- Roma Numismatics / Heritage UK — niche and ancient, but worth a glance if you collect outside pure British.
For a head-to-head on which auction house suits which kind of buying, see our auction house comparison UK.
Hammer vs realised — the part most beginners miss
When a catalogue shows "estimate £500–£700" and the auctioneer's hammer falls at £700, your final invoice is not £700. You'll add:
- Buyer's premium (20–28% depending on house)
- VAT on the premium (20%)
- Potentially VAT on the hammer for some lots (mostly bullion)
- Postage and insurance
A £700 hammer is typically £880–£940 invoiced. We have a full breakdown at hammer vs realised price explained — read it before you bid for the first time.
My positioning for the season
Three themes I'd actually put bids on this summer:
- Top-grade modern decimal keys (Kew Gardens, Olympic Football, 2008 20p mule) at MS66+. The graded-modern market has been steadily compounding for five years and there's no sign it's slowing.
- Common-date sovereigns at low premiums — gold spot has been firming and the gap between melt and graded is narrowing on common years.
- Anything from a named UK collection with provenance back 30+ years. Collector provenance still attracts a 5–15% premium and that gap is, if anything, widening.
What I'd avoid bidding aggressively on:
- Modern Royal Mint issues less than 3 years old — secondary supply usually catches up
- Anything claimed as "rare" but with mintages above 1 million — see what makes a coin rare
Where to track results
The aggregated realised data on MyCoinage updates weekly through summer auctions, so you'll see your watchlist coins update without manually trawling each house. Worth a glance even if you're not bidding — it's the easiest way to read the temperature of the UK market.
MyCoinage tracks every UK coin's realised auction prices. Browse the catalogue or start a free collection.