How much can the auction price of bronze double-sided printing in Han Dynasty be worth?

Have you got any pictures? Without pictures, there is no way to help you answer better. As for how much the auction can sell, it depends on which market, which auction institution, the starting price and the publicity. The price also ranges from several hundred thousand to one or two million, and may even be higher. For example, the calligraphy and painting auction market in Beijing is represented by Beijing Poly, and the porcelain miscellaneous goods auction market in Shanghai is represented by Shanghai Hongsheng.