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Looks like you may have some small die cracks between the letters. Not uncommon on the 50 cent pieces.
Not large enough to really make much of a difference in the value.
Hard to tell if anything else is going on with the glare on the photos.
On good thing is that they are all 80% silver.

Looks like a partially grease filled die. You can see where some of the letters on the banner are also filled.
Not enough to add any premium but it is still 80% silver.

Your correct, the face is the Obverse, the back is the Reverse.

I don't want to burst your bubble but what you describe sounds more like damage than errors. It is only an error if it happened during the striking of the coin. If you could post some pictures, it might help us in determining what you have, but the fact they are pitted and scratched eliminates any v...

If your Tombac is a 1943, the it is common. It is the 1944 Tombac that is rare.

Which is correct?
Your heading says 1943 and your write up says 1944
We are going to need pictures of both sides before any determination can be made.

Actually that's a good question. The prices you see in Coins and Canada, Trends and most other lists are for Business Strikes (circulating coins). As 1967 was the last year for a business strike silver dollar, anything after that was a produced as a collector coin known as a NCLT. (non circulating l...

If your referring to that line showing next to the middle leaf, It's not a variety and can't be doubling.
Hard to tell from that photo with the lighting but it looks incuse which would make it a scratch.
Not sure what else your seeing when you say "there is so much going on".

I don't really see the problem. The three different terms help distinguish the different generations of Canadian Dollars. Silver Dollars- Issued between 1935-1967. Composed of 80% Silver. (Some Silver Dollars issued later in Proof Sets) Nickel Dollars-Issued between 1968-1987. Composed of 100% Nicke...

Not quite sure what you mean by rippling. It would all depend on what caused it. If it happened during the striking of the coin, then it would be an error and have a slight premium. If it happened after the coin was struck. then it would be damage and devaluate the coin. From the sounds of your coll...

First of all, Canada did not issue proof coin sets until 1981. Those hard plastic cases are an aftermarket case that various distributors used to make up sets. They have nothing to do with the RCM. There are many available sets out there, some made with PL quality coins and others with MS business s...

As Bill stated, It stands for Plated as in Multi-Ply Plated Steel, the new composition for Canadian coins that were previously composed of Nickel. They were now composed of nickel and copper plating over steel. First introduced in business strikes in 2001, the "P" was used until 2006 when ...

There are various forms of doubling of which only one carries a premium
and that is a Doubled Die. I'm not quite sure what is happening with yours as
the pictures are a little out of focus but it is not a DD

If you would tell us where you live, we might be able to direct to somebody
in your area. I'm sure any coin dealer could help you.

Looks like what they call a "woodie" caused by an improper mixture of the alloy.
Looking at the original picture, it doesn't appear cleaned.

The back of the 1914 Charlton Catalogue is dedicated to 50 cent pieces
and it shows 4 different varieties for the 1941's.