Quick Take
If you're shopping for diecast dozers and graders, the first decision is what matters more: a lower price on a used model with visible wear, or a new collector piece in the original box. The four listings here span that range, with prices from $33.99 to $325, scales from 1:50 to 1:25, and conditions from used/as-is to new/unopened. Before you choose, think about whether you want a shelf-ready display piece or a model you can handle without worrying about the finish.
What to Consider Before You Choose
Condition is the first fork in the road. A used model can get you into the category at a lower price, but you will have to live with visible wear. A new model in its original box gives you a cleaner presentation, usually at a higher price. Display space is the second consideration: compact models fit more easily on a shelf, while a larger model gives you more presence in a display cabinet. Finally, think about which machine you actually want to look at - dozer, crawler, or motor grader - because each of these has a different silhouette.
Listed Price Comparison
| Model | Condition / Details | Listed Price | Price Bar |
|---|---|---|---|
| Komatsu D65S Bulldozer Dozer Shovel (Shinsei) | Used / Hong Kong-made | USD 33.99 | |
| Komatsu GD655-6 Motor Grader | New / 1:50 scale | USD 56.39 | |
| Allis Chalmers HD-21 Crawler with Straight Blade \& Drawbar | New / 1:50 scale | USD 115.00 | |
| First Gear International Harvester 175 Crawler/Dozer | New / 1:25 scale | USD 325.00 |
Decision Matrix
| Model | Best For | Key Trade-off |
|---|---|---|
| Komatsu D65S Dozer Shovel | A Komatsu dozer at the lowest price point | Used condition and missing smokestack |
| Komatsu GD655-6 Motor Grader | The only motor grader in this selection | Instruction manual not included |
| Allis Chalmers HD-21 Crawler | A new orange First Gear crawler | Higher price than the two lower-priced listings |
| International Harvester 175 Crawler/Dozer | A larger front-and-center display piece | Highest price point and sold as-is in the box |
Product Notes
Komatsu D65S Dozer Shovel (Shinsei Hong Kong, Used)

As the lowest listed price in this group, the used Komatsu D65S is a straightforward way to add a dozer-shaped model to a collection without stepping up to the upper end of the price range. It is a Shinsei-built piece from Hong Kong, with a straight dozer shovel and the Komatsu identity in the title. The condition details are clear: there is paint wear and the smokestack is missing. If you are comfortable with a used, as-is model, this gives you a recognizable Komatsu at a low entry point. If you want a pristine boxed piece, this is not the one.
Komatsu GD655-6 Motor Grader

This new Komatsu is the only motor grader in the group, so it fills a very specific role for someone who wants a grader rather than a dozer. It comes with its original box, and the visual appearance is described as C-9 Factory New. The instruction manual is not included, which is worth knowing if you like to keep paperwork with your models. For a grader fan looking for a new model, this is the one to compare against the dozers here. Its listed price sits above the used option but below the larger crawler models, so it occupies a middle spot in the lineup.
Allis Chalmers HD-21 Crawler with Straight Blade \& Drawbar

This new First Gear crawler wears an orange finish and includes a straight blade with drawbar, giving it a different look from the yellow and darker machines in the set. The box is intact, so the model has a collector-friendly presentation. It is positioned above the two lower-priced listings, which makes it a midpoint choice if you want something new from First Gear but not the most expensive piece here. The orange color and boxed condition are the main reasons to choose it; the higher price compared with the used option and the grader is the main trade-off.
First Gear International Harvester 175 Crawler/Dozer

This First Gear International Harvester 175 is the largest-scale piece in the group and the highest-priced listing. It is new, in yellow, and never removed from its box. The box itself is near mint with mild corner wear, and the model is sold as-is, meaning the photos matter for your final impression. If you want a bigger, more prominent display piece, this is the one to look at. The trade-off is the price, which is the top of this range, and the sold-as-is condition note means you should be comfortable with the box corner wear.
Final Recommendation by Use Case
- Choose the Komatsu D65S Dozer Shovel if you want the lowest entry point in this group and are okay with a used, as-is model.
- Choose the Komatsu GD655-6 Motor Grader if you specifically want a new grader and do not need the instruction manual.
- Choose the Allis Chalmers HD-21 Crawler if you want a new First Gear crawler with the orange finish.
- Choose the International Harvester 175 Crawler/Dozer if you want the biggest display presence and can accept the top price point in this selection.