I have an Ikelite-to-Ikelite single strobe cord, brand new, never been in the water. This a spare I bought several years ago and just found it while unpacking some old stuff. I think the model is 4103, but there are no markings other than the black Ike Made in USA sleeve on one side. It was for an Ike Coolpix 990 housing w/ Substrobe 200 setup. Delrin cord connector included.
$40 and it's yours, shipping included.