1925 ¼ pi. green rouletted 13 with the - Hejaz - Government 4th october 1924 - overprint in red (pos. 1-10) error overprint inverted, a fine unmounted mint bottom corner marginal block of 8 and a vertical corner marginal pair, some stamps with small stains (3 stamps affected), together forming a fantastic positional piece, cat.v. £ 1300+