【Rare/Discontinued】Mitsubishi Pencil uni 0.5-100 Refills, Set of 5 Boxes, Showa Retro

This is a listing for the now unavailable, discontinued 0.5-100 (GRCT) mechanical pencil lead from Mitsubishi Pencil (uni).
With its Showa retro package design, this item holds value as a collector's item.
It's a masterpiece with a unique writing feel and texture not found in current products, boasting a strong and dedicated fanbase.
[Set Contents] Total of 5 boxes (50 pieces)
Each box contains 10 individual packs, with 16 leads per pack.
HB: 4 boxes (40 pieces)
H: 1 box (10 pieces)
*This is a set sale with the original boxes, not sold individually.
[Product Condition]
Unused.
The outer boxes show some scuffs and slight discoloration from age and storage, but there are no major dents, and they are in good condition for their age.
The inner cases are also complete and clean.
[Recommended Points]
This is a discontinued item that is currently difficult to find in stationery stores.
It's rare to find a set of 5 boxes together, making it ideal for stocking up or for your collection.
The inclusion of H lead, which is useful for drafting and other purposes, in addition to HB, is also rare.

As this is a discontinued item, returns are not accepted. Also, please refrain from purchasing if you are concerned about long-term storage.

[Shipping]
The item will be carefully packed and shipped via Mercari便 (anonymous shipping).
Although unused, this is a discontinued product that has been stored for some time. We hope to pass it on to someone who understands this and will cherish and use it.
Immediate purchase is welcome. Thank you.