late 1980s May & Christe leak transformer

Here you can see a late 1980s May and Christe leak transformer for 180W LPS lamps that was fittted in my Philip SRP251 light when i got it. This ballast is not original to the light, so I removed it. I will but another ballast in the light.

As this is a real leak or like I prefer to say stray field transformer that does not need a capacitor to function properly thisone will most likely in my testbench, with the 90W version and eventually the 55W version when i get it.