Your motor sure looks similar to an early 50’s pre-Tecumseh Power Products AH-47 ( Horizontal-4.7 cubic inches) I have. Yours would be based on the V (Vertical) models.
Here’s an interesting read started by Mr Asa who seems to have the same motor. Also try Googling that number you posted. I found the same motor and a write up by Peter Hunn but lost the link.
https://www.smokstak.com/forum/showthread.php?t=122935
And some specs.
https://classic-engines.com/engines-2/power-product/
