ANTIQUE CHINESE MING DYNASTY hand hammered bronze brush washer / pen holder by 2 golden dragons w. engraved bottom Character "Xuan宣" {宣德 "德 "},  size 4 1/4" x 1 3/4", weighted 321 grams. great original condition.

宣德炉,是由明宣宗朱瞻基在大明宣德三年参与设计监造的铜香炉,简称“宣炉”。宣德炉它是中国历史上第一次运用风磨铜铸成的铜器。为了制作出精品的铜炉,在朱瞻基的亲自督促下,整个制作过程,包括炼铜、造型必须自《宣和博古图》《考古图》等典籍及内府密藏的数百件宋元名窑中,精选出符合适用对象、款制大雅的形制,将之绘成图样,再呈给其亲览,并说明图款的来源和典故的出处,经过筛选确定后,再铸成实物样品让其过目,满意后方准开铸。
史上最全的宣德炉成交记录(一) (baidu.com)
宣德炉一件难求,王世襄先生却收藏其一,拍卖价格竟然过千万_文物 (sohu.com)

Sotheby;s and metro Museum "Xuande's ware" are all Qing Dynasty Bronze !-----------
7 Things You Need to Know About Incense Burners | Chinese Works of Art | Sotheby’s (sothebys.com)
Incense Burner | China | Ming dynasty (1368–1644), Xuande period (1426–35) | The Metropolitan Museum of Art (metmuseum.org)