OAKLAND — Alert for fans of Robin Williams: There will be an online auction Sunday of his collection, which features contemporary art pieces and — a replica of Crystal, the scene-stealing monkey that starred with Williams in 2006’s “Night at the Museum” and its sequels.

In a statement, Clars Auction Gallery said the “extraordinary collection is a reflection of the late comedian/actor’s interests and career, including a passion for contemporary art.”

The collection, which will be held online because of the shelter-in-place order, will feature such art pieces as Donald Roller Wilson’s “Shirley’s Friend Waited for Shirley but She Never Came,” estimated to bring in $10,000 to $15,000.

Other items include Kim Cogan’s painting, “Ducks in a Row,” estimated at $6,000 to $9,000; Toshikazu Nozaka’s acrylic and ink on canvas, “Gray Wave, expected to bring $4,000 to $6,000; and a Mihail Chemiakin ink on mylar, which is untitled, estimated at $4,000 to $6,000.

The eclectic property also features a number of decorative art pieces and “several whimsical pieces” — including a replica Crystal, a small taxidermy monkey, according to Deric Torres, a senior vice president with Clars.

“Robin Williams’ fans will recall the late comedian’s connection to Crystal, a screen monkey who costarred with Robin Williams in ‘Night at the Museum.’ Robin celebrated his final birthday with Crystal the monkey, posing with her on his 63rd birthday on July 21st, 2014,” the release said.

Clars Auction Gallery said this is the first installment of the Williams collection up for auction.

Another major estate to be auctioned on April 19 will be the property of Frank J. Caufield, one of the founding partners of the venture capital firm Kleiner, Perkins, Caufield and Byers.

Clars CEO Rick Unruh was responsible for the Caufield collection, according to Torres.

The highlights of Caufield’s collection include a Greek Corinthian form bronze helmet, 7th century B.C., estimated at $20,000 to $40,000.

Bidding for Clars’ online April 19 auction is available by phone, absentee bid and live online at Live.Clars.com and through Liveauctioneers.com and Invaluable.com. Clars Auction Gallery is at 5644 Telegraph Ave. in Oakland.