Looking for any information on this kind of counter stamp on Israel coins, some examples shown on photos. Who did it, amounts, types of coins used, rarity and values. Couldnt find a word about it online (Regarding the coins, not the year of the child).
There may be some info here . https://nnp.wustl.edu/library/publisherdetail/511938?Year=1979&displayAmt=50
Awesome resource, did not know about it. Too bad all those articles are hidden, impossible to find without opening the scans in that website. Unfortinately, no information on my topic. Even searched some other years.
It made me think of Mel Wacks and his counterstamps but I have not seen this particular one before. Here is a document that shows some of his work: https://www.tokenandmedal.org/Journal/Journal_files/Counterstamped_Coins_of_Mel_Wacks.pdf
I found these online. Two with the same counter stamp, one being your host coin. One with a different counter stamp, but is in a case attributed to Mel Wacks as @ddddd mentioned above.
I have a couple of Mel Wacks pieces. There seems to have been another Israeli by the name of Stan Rosen who was making counterstamped coins parallel to Wacks. Might be good to research his work. Z A few of Mel Wacks pieces. I used to have one piece by Rosen. I'll have to dig a bit to find photos. It was a 1979 Peace Accord counterstamp.