CHINE, DYNASTIE QING, MARQUE INCISÉE À SIX CARACTÈRES EN CACHET ET ÉPOQUE QIANLONG (1736-1795)

See a similar Qianlong mark and period Hu flambé vase from the Huaihaitang Collection, illustrated in Ethereal Elegance, Porcelain Vases of the Imperial Qing, The Huaihaitang Collection, The Chinese University of Hong Kong, pp. 242-243, no. 78.