"It is a Holden-bodied Ford, an unusual car built in 1923," Mr Alcock said.

"After the war, Ford couldn't keep up with demand, so in the 1920s Holden produced bodies for Ford ... it makes this car very unique."

Fans of Model T Fords and car enthusiasts in general should circle January 18 on their calendars.

On this day, the largest gathering of Model T Fords ever seen on the South Coast takes place at Gerringong.

It is also the day Mr Alcock opens the doors to "Murray's Shed" to the public.

His shed houses an eclectic collection that includes old number plates (too many to count), old drills, and all kinds of trinkets he has collected over the past 45 years in his career as a mechanic.

"I have a lot of memorabilia, pedal cars, toys, garage memorabilia. I have vintage engines I can start up and demonstrate - lots of stuff," Mr Alcock said.

The day is a fund-raiser for the Gerringong and District Historical Society, with the display taking place at the rear of the Gerringong Museum in Blackwood Street on the land near Murray's Shed.

"I have eight Model T Fords in my collection, all registered and going, and hopefully we will have around 15 or more coming down from Sydney and Wollongong," Mr Alcock said.

"I have secured a 1909 model from Wollongong, which is one of the very early ones, as they were first produced in 1908.

"We are also hopeful of getting one that was used in the film The Great Gatsby; the owner of the yellow cab that featured in the movie lives in Sydney."

Mr Alcock said he had no idea why he had taken such an interest in Model Ts.

"I have been building hot rods and things for the last 40 years and just progressed to enjoy Model Ts.

"They are an amazing car if you get into the mechanics of them and I like the shape of them," Mr Alcock said.

The gathering on Saturday, January 18, will run from 10.30am to 3pm with entry $10 an adult and children free.

The museum will also hosting a photographic car display on the day.