Crank for Victrola VI

[Ben the phono man]

Hello All,

I was given an incomplete Victrola VI recently and since I already had one, I am planning to give this to my Aunt as a christmas present. It is a victrola VI S/M 90324 D and dates to sometime around 1914. I am missing a crank and reproducer. A reproducer is easy enough to find so I will focus on the crank, which is a female crank with a thread size of approximately 5/16 with a 24 TPI. I've never seen this type of crank that I would associate with an external horn victor to be on a victrola. If anyone can help me out, thank you very much! I haven't been able to find anything on ebay.

Thanks, Ben