Riken Optical Gokoku No.1
The Gokoku No.1 is an early Japanese folding camera produced by Riken Optical. It is a pre-war small-format folder, representative of the type of consumer cameras Riken made before its later Ricoh-branded output.
Auction data for the Gokoku No.1 is extremely thin: a single UK saleroom hammer result in 2023 stands at £1,400, which is the only reference point for what one currently sells for. With just one wholesale auction sale on record, that figure should be treated as indicative rather than a settled market value in 2026, and the true worth today depends heavily on condition, completeness and bidder interest on the day.
Sales History
Prices shown are realised prices — auction results and completed eBay sales, never asking prices. Most saleroom figures are hammer prices, before commission; some houses publish a premium-inclusive figure, and we do not adjust for condition. Dealer and retail asking prices are typically higher. How this figure is calculated.
Prices updated: June 2023
| Date | Price | Value GBP | Source | |
|---|---|---|---|---|
| Jun 2023 | EUR 1,400 | £1,202 | 🇦🇹 Leitz Auction | |
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Auction: Leitz Auction 42 (Lot AI_20220121_1128_41687) Title: Riken Gokoku No.1+Gokoku Anastigmat 3.5/50mm
Description:
a very rare, compact medium format camera for 3x4cm exposures on 127 film, design inspired by Leica, collapsible, non-interchangeable Gokoku Anastigmat 3.5/50mm no.10558, in excellent condition and working order (recent CLA by Kanto Camera), including original lens cap Estimate: EUR 2,800 - EUR 3,200 |
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Frequently asked questions
What is a Riken Gokoku No.1 worth today?
The only recorded UK auction hammer price is £1,400 from 2023, so on the available data a Gokoku No.1 is worth around that figure, with significant uncertainty either side.
How much does a Gokoku No.1 sell for at auction?
With just one verified sale, the Gokoku No.1 has sold for £1,400 at UK auction; further results would be needed before quoting a reliable price range.
Why is the value and price information so limited?
The Gokoku No.1 appears very rarely in UK salerooms, and our sales history contains only one hammer result, which limits how confidently any market value can be stated.