used 3Kr. red THE FAMOUS ERROR OF COLOUR, cancelled by two part strikes of the "N.BECSKEREK 1/10" c.d.s. leaving the numeral free and showing part of the watermark. Like the other two loose stamps, one of which shows the same cancellation dated 2/10, it has some defects, little detracting from the appearance of ONE OF THE RAREST STAMPS OF THE WORLD. Dr. E. Diena and Dr. U. Ferchenbauer Certificates (1994). Photo in colour on front cover