Raphael Tuck. Calendar Portfolio.

Patent number 191930.

Seems to date from the Edwardian period so I'm suggesting about 1910.

33cm by 24cm. Some bumped and rubbed corners but otherwise good condition.
Full patent detail embossed on the folder.

Used for mailing and holding calendars. This one was never mailed.

A rare item. I've found nothing similar on Ebay.