This is a Sensenich Brothers propeller (Lititz, PA) Center section:
SER. NO. AF43-E-4933
As I understand it, the 43K component of the SN indicates this prop was built under military contract. It was likely manufactured somewhere in the mid-1940s.
Overall length: 72"
Max blade width: 5.25"
Center section, outer diameter: 6.125"
Center section, inner diameter: 2.25"
~ As I hope you can clearly see in the photos, one of this propeller's brass ends has wear. ~ I paid over $2000 for this piece and have recently lost my job, there is no RESERVE I have to sell this.
You can own a geniune piece of WWII and aviation history by buying this item. Please let me know if you want any additional photos or information, thanks,Michael