14k yellow gold articulate 3D abacus charm pendant 2.4gm JR7781
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Product details
| Management number | 17989782 | Release Date | 2025/10/07 | List Price | $119.40 | Model Number | 17989782 | ||
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One 14K yellow gold 3 dimensional charm, it is a first mathematical instrumental in the world. THe charm has movable bead. If you know the formula, you can able to do all the calculation from it, and it never run out of battery. Circa 1970's, I am not even sure is there any jeweler still making it, it is labor intensive. The charm is 21.0 x 8.6 x 2.6mm, weight 2.4gm, hallmark 14K
| Category | Vintage & collectibles > Jewelry |
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| Size | N/A |
| Brand | Handmade |
| Condition | Good |
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