If you’re new to model railways, one of the first things you’ll come across is the concept of “gauge.” Understanding gauges is essential before you start collecting, building layouts, or bidding at auction.
With our April 9th toy auction featuring everything from large-scale G gauge locomotives to compact Z gauge collections, now is the perfect time to learn the basics and find the right scale for you.
Whether you’re a seasoned collector, looking for a special gift, or curious about starting a new hobby, these auctions provide an exceptional opportunity to secure distinctive pieces for your collection. Bidding is available or online via our live bidding platforms, making it easy to take part wherever you are.
What Is a Model Train Gauge?
A gauge refers to the distance between the rails on a track. Different gauges represent different sizes of trains, and each has its own advantages depending on space, budget, and collecting goals.
The Most Popular Model Train Gauges Explained
OO Gauge (1:76 Scale) – The UK Favourite
OO gauge is the most popular scale in the UK and a favourite among collectors and beginners alike.
Why choose OO gauge?
- Widely available models and accessories
- Ideal balance between detail and size
- Perfect for home layouts
In our upcoming auction, you’ll find a wide range of OO gauge locomotives, including Hornby classics like the Flying Scotsman and Evening Star, as well as Bachmann Branchline models in near-new condition.
Great for: Beginners, collectors, and anyone building a traditional model railway
G Gauge (Large Scale) – Big, Bold & Impressive
G gauge trains are much larger and often used for garden railways or display pieces.
Why choose G gauge?
- Highly detailed and visually striking
- Ideal for outdoor layouts
- Durable and easy to handle
Our auction features standout pieces like the Bachmann Spectrum Shay locomotive, a must-have for collectors of large-scale trains.
Great for: Display collectors and garden railway enthusiasts
Z Gauge (1:220 Scale) – Small but Mighty
Z gauge is one of the smallest commercially available train scales, making it perfect for limited spaces.
Why choose Z gauge?
- Compact layouts in small areas
- Intricate and detailed miniature designs
- Increasing popularity among collectors
Look out for Marklín Mini-Club sets and accessories in our April auction, including passenger sets, locomotives, and layout buildings.
Great for: Collectors with limited space or those who enjoy fine detail
TT Gauge (1:120 Scale) – The Hidden Gem
TT gauge sits between OO and Z, offering a balance of detail and space-saving design.
Why choose TT gauge?
- Less common, making it collectible
- Good compromise between size and detail
- Growing interest among enthusiasts
Our auction includes Tri-ang TT gauge locomotives and accessories, perfect for collectors looking for something a little different.
Great for: Enthusiasts looking for unique or niche collections
Which Gauge Should You Choose?
It depends on your goals:
- Limited space? Go for Z or TT gauge
- Traditional UK layouts? OO gauge is ideal
- Display or garden railway? G gauge is the way to go
If you’re just starting out, OO gauge is often the easiest and most accessible entry point.
Why This Matters for the Auction
Understanding gauges helps you:
- Identify which lots suit your collection
- Avoid buying incompatible track or accessories
- Spot undervalued items across different scales
With hundreds of lots available on April 9th, there’s something for every level—whether you’re just starting or expanding an established collection.
Don’t miss your chance to bid!
Why You Should Attend the Auction
With hundreds of rare and collectible lots in our upcoming auction, this is the perfect time to add a Hornby, Bachmann, or Wrenn locomotive to your collection. From G gauge Shay locomotives to OO gauge Flying Scotsman models, the April 9th auction promises something for every collector.
Even if you can’t attend in person, online bidding is easy—allowing you to compete for these rare treasures from anywhere in the world.
How to Bid at Auction
Bidding is quick and easy:
In Person:
- Register at the Silverdale Saleroom before bidding.
- Receive a numbered card to participate.
Online (fee-free via Potteries Live):
- Register now to bid live from anywhere.
- Also available through The Saleroom, Easy Live Auction, and Invaluable.
Telephone:
- Limited slots available; early booking is essential.
- Speak with our team and bid live as your lot comes up.
What Happens After You Win?
If you win an item while attending in person:
- Visit the main office to pay and collect your item.
- Please allow approximately five minutes after the hammer falls for administration processing.
- If bidding on multiple lots, you may prefer to settle once all your lots have finished.
For all buyers:
- Payment and collection must be completed within seven days.
- Postage services are available if you require delivery.
- Please refer to our buying fees and postage information pages for full details.
Thinking of Selling at Auction?
Alongside welcoming buyers, we are always looking for quality items for our upcoming auctions. If you own ceramics, jewellery, furniture, artwork or collectables and are wondering what they may be worth, our specialists are here to help.
✅ Free auction valuation
✅ No obligation advice
✅ Experienced UK auction specialists
Whether you are considering selling a single item or an entire collection, our team provides professional, market-led valuations based on real auction results and current collector demand.
Free Valuations – Simple & Convenient
You can choose the option that suits you best:
- In person – Book a free appointment with one of our valuers at our saleroom.
- Online – Submit photographs using our online valuation form for an expert assessment.
- WhatsApp – Send clear images directly to 07864 667940, and a member of our team will be in touch.
Why Sell With Potteries Auctions?
With over 25 years of experience handling Potteries Auctions works with private sellers, collectors and dealers across the UK every week. Our specialists regularly assess pottery, fine art, jewellery, militaria and decorative antiques, providing accurate valuations grounded in current market demand.
If you’re unsure about age, maker, rarity or value, our experts can quickly identify and advise on the best route to sale.
If you’re thinking about selling, get in touch today!
Frequently Asked Questions about Model Train Gauges
OO gauge is the most widely used in the UK due to its availability, detail, and compatibility with brands like Hornby and Bachmann.
OO gauge is typically the best starting point because it offers a wide range of models, accessories, and affordable entry options.
Z gauge is one of the smallest commercially available scales, making it ideal for compact layouts.
Not necessarily—it depends on your needs. Larger gauges like G are great for display and outdoor use, while smaller gauges like Z are better for limited space.
No—each gauge requires its own track and accessories, so it’s important to stick to one scale when building a layout.
Yes—especially rare, boxed, or limited-edition models. Auctions often feature collectible pieces that can increase in value over time.