Looks like someone was trying to make a "double headed" nickle and this one didn't get completed. I have a similar "double tailed" Liberty "V" nickel. Z
Looking closely at the blurs you posted, I can see the outline of the Jefferson Memorial on the reverse. It would be nice to see better images of the back side. What year is it? Z
Should be 5 grams. There is no need to weigh this to verify it though. It is 100% damaged. We see these all the time here.
Yup, machined. Probably to make some type of jewelry. Value - 5 cents if anyone will accept it when you try to spend it.
Nickels have always weighed 5 grams. 5.0g (Not including 3 cent nickels and half dimes). Except for war nickels (also 5.0 grams) nickels have always been an alloy of 25% nickel and 75% copper. I expect your coin to be in the 4.0-4.5 gram range.
Even without having to click on the thumbnail photos, I could see it was machined and not an error. A fun coin to add to your collection. Welcome to CT BTW and as for photos, here is my 2¢. You should always post in focus FULL IMAGE photos (after you upload your photo, two buttons appear: Thumbnail and Full Image, click Full Image and your photo appears full size on your post and is easily enlarged by clicking on it. Always show both the obverse and reverse, even if your question is just about one side. Members can often give more valuable information having both sides to evaluate. Crop out superfluous background so just the coin shows, and post photos with correct orientation so members don't have to turn their computer in some awkward fashion to view it properly. Add close ups of areas you have questions about and make your questions as definitive as possible so we know what you are asking for. And try to have the best lighting possible to show the most favorable photo of the coin. Hope this helps in the future. Good luck.
I would not accept that at face value. Half the coin is missing. That would be rejected by any counting machine for being underweight. It has no value at all, not even five cents.
By the way, you should add "None Of The Above" to your poll. That way you'll get some votes . . . . . . Anyway, here are a few photos of "similarly" altered coins. The first is a 1912-D over ??? Liberty Head Nickle. I think this one was created LOOOONG ago given the relative condition of the nickles used. I know, it's hard to see through the plastic, but you get the idea. Use the staples as to a guide on the rotation of the "reverse" . . . . . . The next one is similar to your nickle. It is an unfortunate 1936 Standing Liberty Half that was sacrificed in the mid 1990's to make a watch. The watch was not waterproof, got wet, and became irreparable. I bought the watch at a garage sale years ago for a buck or two thinking there would be more silver left in the sacrificial coin. I disassembled the watch, but kept the coin that was the watches face. Today, I share it with you. Z