Here is the Montblanc No. 246 from 1946.  This pen is a button filler and is in working order. The pen comes in the rare coral red color.  The 246 was the largest pen in the 24x line. It has gold filled trim and the trim and the celluloid are in excellent condition with no defects or deterioration in the celluloid and the rings are tight.  The nib is a flexible medium. This is a very nice near mint condition example of the 246 in a rare color.  This is the pen found at Gary Lehrer's Gopens catalog 84/188.