I don't have any originals but I like the following from the Playboy Bar Guide. All are shaken and strained into a cocktail glass.
The Dacquiri of course, preferably with Havana Club Blanco.
2 oz. light rum
0.5 oz. lime juice
1/2 tsp. superfine sugar
Bacardi Cocktail
1.5 oz. light rum
0.5 oz. lime juice
1 tsp. Grenadine
Beachcomber
1.5 oz. rum
0.5 oz. lime juice
0.5 oz. Triple Sec
1/4 tsp. maraschino liqueur
Use sugar-rimmed cocktail glass.
Derby Dacquiri
1.5 oz. light rum
0.5 oz. lime juice
1 oz. OJ
0.5 oz. simple syrup
El Presidente
1.5 oz. gold rum
0.5 oz. dry vermouth
1 tsp. dark Jamaican rum
1 tsp. curacao
2 tsp. lime juice
1/4 tsp. grenadine
Fort Lauderdale
1.5 oz. gold rum
0.5 oz. sweet vermouth
1/4 oz. OJ
1/4 oz. lime juice
Jade
1 3/4 oz. gold rum
1/2 tsp. green creme de menthe
1/2 tsp curacao
1 and 1/2 tsp. lime juice
1 tsp. sugar
Stratosphere
1 oz. rum
0.5 oz. California brandy
1/4 oz. tart cherry liqueur
0.5 oz. lemon juice
Playboy Bar Guide says "pleasant to drink around a cheese fondue."
Your invention is somewhat similar to a St. Augustine (from Playboy book)
1.5 oz light rum
1 oz. grapefruit juice
1 tsp. Cointreau
Serve in sugar-rimmed glass with lemon peel garnish.