This very rare and big Swiss made Mirexal Electronic was made around 1972. It is in good shape and runs well! Big and heavily made steel case with steel bayonet mounted back. The case has the usual superficial scratches. Very remarkable silver and blue dial. This Mirexal has a diameter of 41.2 mm from left to right, without the crown. The height is 42 mm and the watch is 12 mm thick. The 20 mm wide red/purple leather Morellato strap is new; length of watch + strap is 23 cm. Movement: very rare and remarkable high-quality Swiss calibre ESA 9154 'Dynotron' with 13 jewels and incabloc. This Dynotron calibre has an electronically controlled balance motor instead of the usual main spring. Quick date adjustment: set by changing 23–24h The movement runs very well; the date also works well. No box or papers. Will be packaged very well and shipped by registered mail.