2025-4 The Beauty of Mathematics
(4-1), Pi, 80 fen, 36 * 36 mm
(4-2), Pythagorean Theorem, 120 fen, 36 * 36 mm
(4-3), Euler's Formula, 120 fen, 36 * 36 mm
(4-4), Mobius Strip, 150 fen, 36 * 36 mm
Technical details
Scott No: -Serial number: 2025-4
Values in set: 4
Date of issue: March 14th, 2025
Denomination: 470 fen
Designer: Xia Jingqiu
Size of stamps: 36 * 36 mm
Perforation: 13.5
Sheet composition:
16 for Sheet I;
8 for Sheet II
Size of sheet:
210 * 188 mm for Sheet I;
190 * 128 mm for Sheet II
Printing process: Offset
Printing House: Beijing Postage Stamp Printing Works
Themes: Science,
Share: 
Price List
Item location: China
Ships to: Worldwide
*Shipping (via registered air mail) is based on subtotal of order. See detials below.
* 1) for special items shipping and handling cost may be included. 2) Other fast shipping is available.
To special order, please let us know what you are looking for. We will help you to meet your unique interests.
Ships to: Worldwide
*Shipping (via registered air mail) is based on subtotal of order. See detials below.
| Order Subtotal | S & H |
| $0.01---$15.00 | US $5.00 |
| $15.01---$50.00 | US $6.00 |
| $50.01---$100.00 | US $7.00 |
| $100.01---$180.00 | US $8.00 |
| $180.01---over | US $9.00 |
To special order, please let us know what you are looking for. We will help you to meet your unique interests.
