Nope. No Copper Cents minted in 1985 That Cent is probably a little overweight. Many coins have a +\- weight variance.
I would predict that your scale device has an accuracy rate well below 50%, with a high probably that it is below 10%. And, it actually doesn't give you a weight, just a comparison with 90% inaccuracy+/-. FYI, the thread is creating a directional tension on the chopsticks, probably taking your accuracy well below 10% You can do steps to improve the accuracy for weight comparisons .. but truthfully ... something like this can greatly improve your weighing technique, and accuracy. https://www.amazon.com/gp/product/B0731F3F2N/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 for instance, instead of using the spool as the lever, you be better off just putting it on it's side so it's flat. get a round chopstick and cut off a section about an inch long. Glue that to the middle, top of the spool. then take your 3 chopsticks; chop off the end that are pointed. Then glue the 3 chopsticks together removing the rubber bands. The rubber bands can move thus throwing off the center balance. With that, you can then balance the 3 chopsticks on the one round one glued to the top of the spool. With a balanced, mark that segment. Then carve out a little underneath it to provide a perfectly round concave segment to balance on the round chopstick. If it's not perfectly round concave section then just don't do it, as that can unbalance the chopsticks. At least it's marked, and you can place it on the chopstick. Now the only problem is you have to place each cent in the EXACT same location each time you put it on the ends. A millimeter off either way will cause imbalance. you will have to create a process, say doing it 100 times and throwing out the top 20 and bottom 20 to determine a good factor for accuracy because of this. you can buy 2 brand new cents and use those as a standard weight to find the balance location on your comparison scale. Good luck. or just buy a scale.
I can already see it is plated over zinc. That color is the giveaway. But an accurate scale is very important.
