'Pawn Star's' Richard 'Old Man' Harrison's most memorable moments

The “Pawn Star” family is dealing with a significant loss following the death of Richard “Old Man” Harrison, the curmudgeonly patriarch of the Harrison family whose grumbling about the goings-on in the Las Vegas shop he ran with his son and grandson made him a reality TV star. He died Monday after a long battle with Parkinson's disease at age 77.

Across social media, family and fans posted emotional tributes, but his personality might best be realized by watching the show, where his interactions reflect his old-fashioned, no-nonsense style.

Here are five of Old Man's most memorable moments:

His watchful eye

Harrison kept his underlings in-check, usually overseeing negotiations with a hands-off approach, when he supervised his co-owner and co-founder son, Rick Harrison, as he attempts to haggle for a Hudson Bay Gorget.

The most important job, arguably

But his role on the business end was only auxiliary if not solely for comedic purposes at most, as Rick curtly explains to a client selling a 15th century book.

“Part of his job is just to be a grumpy old bastard,” Rick said.

Heart of gold for the business of gold

The Old Man's grumbling typically clashed with business decisions, but he had a sense of humor about it.

“You guys are gonna put me in my grave,” he told Rick while playing Spider Solitaire after hearing the news about a dismantled helicopter bought for a $100,000 restoration project.

Cars, cars, cars

The Old Man had a penchant for merchandise of his time, particularly cars. His genuine reaction to the 1957 Chevy Rick restored for his 70th birthday captures this eloquently.

“We got cake for you,” Chumlee told the Old Man.

“Screw the cake,” Harrison replied in his typical manner as he started the engine.

The quintessential 'Old Man'

Putting it all the pieces together, the Old Man's character echoes conventional values: seriousness with a grain of salt and devotion to his craft. His grandson Corey exposes similarly traditional virtues in the relatable situation of explaining Facebook to the old 'Old Man'.