Help!! I Cant Figure Out How To Get To My Treasures :( ... Advice Needed

Freezing won't help. Think about it. Colder temps tend to contract materials (the tube). Warmer temps tend to expand them. A suggestion posted elsewhere is to place it in an oven with a low (warming) setting. I can't remember what it was, maybe 250°F?

You need to expand the plastic to release the coins. Of course, wear mitts when handling the heated tube.

Putting or in the oven wouldn't be smart. The higher temps can oxidize the coins and give them an array of colors... like blues and pinks.

Try breaking the plastic with a little hammering in a towel. Don't hit too hard. Kinda like breaking a coin out of a slab.

I suggested freezing to make the plastic more brittle. Spruett is correct in that it will cause the plastic to contract, but it should cause the coins to contract more, since they conduct heat better. This is the same principle that allows running a stuck jar under hot water to work -- the metal lid expands more than the glass jar. Mark1959 pointed out that putting the roll in the freezer will cause condensation to form on the coins when you get them back to room temperature. If you are freezing, do it in a sealed ziplock bag. You can try to shake the coins out of the tube then, but leave the ziplock sealed until it has reached room temperature again so no condensation will form on the coins.

Mark1959 suggested using an over to get the plastic tube a little more pliable. Obviously, you want to use a temperature that will not melt the plastic onto your coins. I believe he said 200 degrees? This sounds reasonable to me, since that's below the boiling point of water. I would actually start with the lowest available setting and work my way up if necessary. (I think ovens start at 140-170?)

Hammer will mess up at least a few of your coins. Crazyb0 was in a similar situation recently and ended up damaging a few coins at the bottom. He sent me one of the convex coins -- an interesting piece, but not a pretty one!

I would think putting a towel in the bottom of a sink and using very cold water to soak them in would be better.
Then run the tube under hot water and the plastic will expand faster than the coins since they will take longer to expand due to the mass of the metal. The plastic will expand faster than the nickels.
The coins may fall into the cold water below but they won't clang on an empty bare sink or clank onto eachother with much force since they won't drop as fast as in the air.
You could even put the roll in the freezer for an hour but do the same with a few inches of water in the sink. Might want to rinse with distilled water after you get them free.

.Freezing works but you need to go really cold to make it easy. Dip the tube in liquid nitrogen and the tube will shatter. The plastic gets brittle and tries to contract significantly, but the mass of the coins takes longer to cool so the plastic over stresses and shatters.

Yeah ,that is an old type tube ,the cap just fits over the tube ,no threads . I have a few of them myself and yes the coins are tight fitted in those tubes .
take the cap off and gently tap the top of the tube on a hard surface at a 45 degree angle while rolling the tube around with your fingers . It's time consuming but you won't have to worry about damaging the coins with heat or ice .

Well done!

I only just thought of that angle when you said that. Not only is it the tight fit but, releasing the potential vacuum from the bottom of the tube when trying to get the coins out. That may actually be the biggest force holding the coins in place.

Good to know.

Very slow compression in a vise, until you hear a cracking sound in the plastic tube. Freezing will help to make the plastic more brittle.

What is of more value to you, the coins or the plastic tube?