The Finney Company (Finco) produced a 6M/2M beam antenna called the Stinger A-62
The antenna is up at my QTH and it works, but I won't claim that it's the best antenna.
The specs say 12dB for 2Meters and 9.5dB for 6Meters.
Click on the appropriate picture to go to a larger picture.
73's -- Martin W6LHI (was KG6QPB)