It's not a dual band antenna.
It looks like a Hy-Gain V-2R 2 meter antenna. Judging by the fence it's way too big to be the UHF version.
The dual-band version has more elements.
V-42R is independently tunable at 144 and 440 MHz. Fed through one coax cable, it has sets of ¼ wave radials which properly decouple ⅝ wave radiators from the mast. Gives 5 dBd gain on UHF and 3 dBd gain on VHF. Type N, handles 200 Watts. 9 ft. Model Frequency Gain Input Power Wind Max Mast...
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