Northernmost Nature in Hokkaido
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| R670a | R670b | R670c | R670d |
| Issue | Northernmost Nature in Hokkaido | |||
| Prefectures | Hokkaido | |||
| First Day | 22 August 2005 | |||
| Quantity | 2,500,000 sets | |||
| Value | 80 yen x 4, se-tenant strip of 4 | |||
| Designs | R670a - Sweetbrier and former Shana PO | |||
| R670b - Sea otter | ||||
| R670c - Chishima-zakura | ||||
| R670d - Tufted puffin | ||||
| Size | 22.5 x 33.0 mm, vertical | |||
| Printing | Photogravure in 5 colours | |||
| Sheet | 20 stamps (4 x 5) | |||
| Designer | Shimoda Kouichi (illustrator) | |||
| Printer | National Printing Bureau | |||