VTG Elgin ?Automatic Calendar Travel Alarm? Clock In Black Case w/ Box Month/Date/Day style 8828 Recently tested and kept time within 1 minute per day based on our observations and the alarm functioned as set. This clock itself is in great overall cosmetic and mechanical condition with luminous hands and number indicators. The made in Japan black case is good with light scuffs from use. Comes with its rare original box which is nice overall , with one side having a loss shown in last pic. See all pics for details and sizing. From our observations, the clock does change Day and Date (albeit with a staggered delay) while the month does NOT change automatically. The month feature has a simple dial adjuster versus the metered levers for setting day and date