Old 1970s/80s glass lamp shade 28 cm retro decoration

An old lamp shade, light fixture... It is made of glass, with its 3 holes for fixing and without chips or cracks. Height: 28.3 cm. Top diameter: 7.2 cm. From the bottom: 14.5 cm and outer diameter: 21 cm. To be cleaned (see photos). Authentic 1970/80. The photos are an integral part of the description. Vat not applicable - article 293 b of the cgi shipping only to france.