🖤 A wonderful vintage Korean 23-column abacus, or jupan (주판), with a sleek black frame, warm brown beads and a wonderfully graphic retro look.
This one is especially interesting because it still has its original Korean maker markings and label.
The center is marked 한국산기(주), identifying the manufacturer as Korea/Hanguk Sangi Co., Ltd., and the original label includes 23자리, meaning 23 places or columns, together with 우주주판, which reads “Wooju Jupan” or “Wooju Abacus.” The label also has the model-style marking Da-3 and an SK emblem.
📜 A little history
The abacus is one of the world's classic calculating tools. Numbers are represented by physically moving beads along a series of rods, making it possible to perform arithmetic without an electronic calculator.
This Korean example has one bead above the center bar and four below on each column.
The upper bead has a value of 5 and each lower bead has a value of 1.
Only the beads moved toward the center bar are counted. Each successive column represents a different place value — ones, tens, hundreds and so on — allowing an experienced user to perform addition, subtraction and much more.
Abacus training was once a familiar part of Korean education and commercial life. Historical Korean sources specifically mention 23-column abaci manufactured by Korea Sangi during the 1980s, when abacus classes and competitions were still widespread.
This example most likely dates from the 1980s to early/mid-1990s.
🤎 It is also a really nice object simply to look at. The warm brown diamond-shaped beads against the slim black frame have a strong geometric quality that works beautifully with vintage, retro, minimalist and eclectic interiors.
-- Display it on a desk, bookshelf or office shelf,
--- add it to a collection of vintage school or mathematical objects,
---- or use it as an interesting conversation piece in a study or classroom.
It can also be a fun hands-on way to introduce children to numbers, place value and basic arithmetic with adult guidance.
🤎 Material - Plastic and metal
📐 Dimensions
Length: 12 7/8 in (32.7 cm)
Width: 2 5/8 in (6.7 cm)
Depth: 3/4 in (1.9 cm)
✔️ Condition
Very good vintage condition with only light signs of previous use.
There are some very faint surface scratches and small handling marks, particularly on the black plastic areas, consistent with age and normal use. Please check the photos closely, including the close-up photographs of the frame and original labels, as they form an important part of the description.
The black and warm brown color combination remains very attractive, and the original Korean markings add a wonderful bit of history to the piece.
📦We ship fast—usually the same day or within 2 business days!
Questions? Ask me.
🛒Visit my shop: https://vintagebyfatima.etsy.com
Follow me on Instagram @vintagebyfatima
♻️
1-2 business days
Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.
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Last updated: July 2025
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