Is there any collectible value in the long round bowl with scarlet letter printed at the end of Tongzhi year?

The long round bowl with the scarlet letter seal at the bottom of the Tongzhi annual system is of collection value.

1. Tongzhi period is an important period in Qing Dynasty, and its history and collection value have been widely recognized.

2. The traditional porcelain-making technology was adopted in the bowl, which was a very mature and representative porcelain-making technology at that time, and it was rich in color, practical and artistic, showing the superb level of porcelain-making in Tongzhi period.

However, please note that the collection value will be affected by many factors, including rarity, market demand, preservation status and so on. If there are more details, you can consult an art or antique expert for a more accurate evaluation.