That is Cohen B804 or B805, depending on whether you consider that a die crack or die break in her terminology.
It is listed as LDB4-1956-005A 4SDH on CoC about 3/4 down the page here:
http://cuds-on-coins.com/ldb4-1956-2/Edited to add: I think yours has a small die break so it would be B805
Further edit: I also don't see B805 listed on CoC, nor do I see a Pre-Cud listed for 1956. It appears the die crack/break on your coin goes from rim to rim, so it may be listable as a Pre-Cud, and also as B805 since only B804 is currently listed. Can you shoot the coin with lighting to emphasize the entire lower die crack to show if it goes rim-to-rim?
Contact me for photographic equipment or visit my home page at:
http://macrocoins.com
Edited by rmpsrpms
08/23/2024 6:36 pm