In fact its the first one I've EVER seen.

 

https://www.ebay.com/itm/DANNY-WHITE-cracked-up-over-you-NORTHERN-SOUL-45-decca-demo-M-HEAR-/201525228319?_trksid=p2141725.m3641.l6368

 

Very true.  Can't say I've ever seen a demo of this before in 34 years.

This is the 3rd I've seen for sale on eBay

i have one 

Me too, so that's 3 up to now 

It just sold for $97.

i thought it was a joke,theres shit loads of em!

Nice tune. Nice price. Issues are pretty common but the DJ copy is seldom seen and evidently in very safe pairs of hands.

Seen them on and off for the last 40 odd years