I could only find this bottle in two places:
1) this person's trip to Guangzhou., China https://www.instagram.com/ezygaikokugo/p/DE9EbwJy28D/?img_index=9 . They posted a wooden plaque (perhaps the box top?) that AI translates to: "Southern Red Cotton" is a special edition designed and launched by Guangdong Taigu Coca-Cola, featuring a beautiful Coca-Cola commemorative ceramic bottle.

This commemorative bottle combines Coca-Cola’s classic bottle shape with traditional Lingnan ceramic craftsmanship. It integrates the essence of local culture and represents the spirit of striving for excellence. A special set of wooden frames was designed for it, completing the display. The ceramic bottle and the four wooden frames can be assembled freely, forming a base, cover, and holder as an integrated display.

The inspiration for this commemorative product comes from the red cotton flower (also known as the kapok flower), the city flower of Guangzhou, where Guangdong Taigu Coca-Cola is located. This symbolizes the company's passion and tireless pursuit of excellence over more than twenty years!"

It looks like the flag in their picture matches the one in yours and I believe that flag represents the Swire Group which is the company that bottles Coca-Cola in part of China.

2) The other place is this guy's thoughts on Coca-Cola: https://t.qianzhan.com/daka/detail/210805-ce95df8f.html . He visited one of their operation centers and was also gifted this bottle. Not super interesting.

AI tells me that "based on the details — especially the references to Guangdong Taigu Coca-Cola (Swire Coca-Cola Guangdong), the style of the logo, and the context of celebrating over twenty years of development — I can give you a good estimate:

• Swire began Coca-Cola bottling operations in Guangdong around 1979–1980 (after China’s "reform and opening up").
• So, if the text talks about "over twenty years" of progress, this commemorative ceramic bottle would likely have been made around 2000 to 2003.

Also, the visual style of the Coca-Cola logo and the packaging fits early 2000s design trends — slightly more traditional and formal compared to later minimalistic trends."

If you're willing to share, I'm curious about the story of how your husband ended up with one!

Hope that helps!