Can't open my dolphin eveready torch to put the battery in

had a quick look online and found this is a museum piece.
http://www.flashlightmuseum.com/Eveready-Flashlight-FAB4DCM-Red-Black-Sea-Beam-Waterproof-Lantern-6V-2003
Called a Dolphin torch, I remember these from the '80s and had to replace the batteries too often to ever want to do it again.
The front unlocks by rotating 1/4 turn. The batteries are a 6V sealed lead acid cell and now cost more than a new modern torch with a Li-ion cell. You will need a 6V charger if the battery can be recharged and unlikely if its old and discharged for long time.

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Looks like the top unscrews. Unscrew top and remove lamp to expose batteries perhaps.

The bezel (the circular portion on the front of the flashlight that holds the bulb and lens) will unscrew. The old battery should slide right out.

Hope this helps.

On the bottom is an indention where the lamp attachs to the handle portion. The latch opens when you push the button toward the front of the lamp. Once it is opened, then slide the lamp off, revealing the battery compartment - remove the batteries and replace with new ones

Twist the top of the torch.

You need to twist the black bulb end off in the direction of the arrow labeled open. The best way I found was to place the yellow end between my legs to hold it in place.

twist the top of the torch, the model I had was with 2D batteries.