Tiffany & Co. Portfolio Mantel clock

For sale is a Tiffany & Co. Portfolio Brass Moon Phase Clock that shows day, month, date and moon phase. The clock is 6 3/4" tall x 6 inches wide x 1 3/4" inches at the widest. It is substantial weighing almost 2 pounds (1.96) and has a Hermle Quartz 2100 movement. To set there are knobs inside the back cover which twist to rotate. Small black lettering on the back cover read: Made in Germany and on the face Portfolio by Tiffany & Co. A rare find and elegant clock!
Note: This particular clock is basically 'new' in the sense that it has never been used. It was manufactured in the
1980's and was a Mother's Day Gift to my mother but she had it tucked in a bureau drawer preferring her 8-day Luxor Clock she had been using to date for twenty years prior. So, this particular clock has not seen the light of day for about three decades...thus the immaculate condition.
We tested a battery and it has been running now for the past three days just fine...