It's the sort of game that can still get rugby league fans talking 50 years on.

Forbes' 13-11 win in the 1975 reserve grade Group 11 grand final involved 20 minutes extra time and three disallowed tries - the referee had a police escort to leave the ground.

"Astute judges later described the game as one of the most absorbing and entertaining grand finals in group history," newspaper clippings of the day reported.

"As a spectacle the match contained everything so characteristic of rugby league, with players from both sides lifting their games immeasurably in the colourful atmosphere that was grand final football."

This June long weekend, the Magpies of that era will be reuniting in Forbes with the chance to reconnect and to enjoy what's typically a great weekend of footy in the region.

Reunion organiser Alan Rees said Group 11's reserve grade competition was a tough one in the 1970s with Eugowra and Canowindra fielding strong teams, and some tough games against Narromine.

But Dubbo Macquarie and Dubbo CYMS were the sides to beat in those days as well and Forbes had a few grand final berths against them in the era.

The Magpies had had a close 20-17 grand final loss to CYMS in the 1973 grand final before they earned their place in the big dance again in 1975 and this time held the trophy high.

Captain Walker produced a gutsy, captain's effort and coach Norm Cook praised the team's efforts.

"Team spirit, such an important sporting commodity, was the main reason why we prevailed," the Advocate reported.

Twelve months later, a hungry Macquarie side got their own back over Forbes, winning the 1976 premiership 11-10.

The feature night of this reunion weekend will be a dinner at Club Forbes on Saturday 7 June, with a meet and greet at The Vandenberg Hotel the Friday night before and the option to head to Parkes to cheer Forbes on in the long weekend derby on Sunday.