Sorry for your loss. Now, for the good news, I will take them off your hands so you don't have to look at those darn things ever again, I promise, okay... Just kidding of course. Good luck.
With "carbon spots" yes. (little dab of organic mater that decomposes and the organic acids cause halo toning in different shades of brown around the dab which turns black. When cleaned the black speck is washed away and the halos may be lightened but they tend to stay visible. Often caused by a drop of spittle.) The 1954 Franklin appears to be a carbon spot, gray or brownish spot with a black center. The 1948 may be as well.
Nothing to lose...pick the one with the lowest value and 1) wash your hands thoroughly 2) holding the coin, put it in running hot/warm water 3) dip a Q-tip in eZest and carefully swab ONLY the toned area 4) immediately rinse the coin thoroughly and pat dry.
Have you done this before or is this (someone told you this). @C-B-D his 71 would be a challenge. I just don’t see it.
That's a tough one. I don't think they can be completely removed but, you maybe able to lighten them up. You could try a Q tip with a little coin dip on it and touch the area where the spots are. However, wash it off quick. Basically touch and wash off. Then repeat. Try along the rim first. Only do one spot at a time. You will never bring it back to where it was before the spots started but, if lucky you may improve the look. You have nothing to loose if you try. Just be careful.
Comet with an old tooth brush was my go to tool back when I was a kid. Brightens them right up. If you want to make it fancy you can buff it with a shoe buffer. Give it a spit shine.... You can make it look proof like. Ha Ha "don't do this with out adult supervision". Luckily I never did this on anything of value. Of course back then spending more than a dollar on a coin was a lot. I may have been 7 or 8 at the last time I did a comet job. I learned from an old time collector that cleaning coins was a No No. He also showed me the proper way to hold coins. Good advise back then.
Cheech9712, asked: "Have you done this before or is this (someone told you this). @C-B-D his 71 would be a challenge. I just don’t see it. Yes. Me and thousands of dealers/collectors restore coins. I'm too modest to post anything additional...NOT!
Pickin and Grinin, posted: "Lets see some photos big shot. LOL" You have really hurt my feelings. Compounding the misinformation you posted with your attempt to disguise this snarky post with a "LOL" get's you nothing. Additionally, you have also hurt all the members here that will be denied learning something about conservation with a short tutorial. They have my apology.