I found a huge cap-like looking part in an old parts bin of mine. I tried making sense of its marking and I don't really understand what they mean. I googled for the part number and I found eBay listing and such, suggesting it's indeed a cap according to the eBay category, but even there I didn't find further information about the specs of this thing (somewhere it was suggested it's a 40uF 1250V cap but I don't see 40 anywhere written on the part).
Testing it with my component tester delivers very weird results: it's detected as a diode but also with 1.8mF capacitance...?! (usually the tester works nicely and rarely lies to me)
Can you help me identifying this?
EDIT: Interestingly, while playing with it again, the tester detected it once as capacitor, with 1759uF and 7.9 ohms ESR. But I can't reproduce it, now it's back to the diode rubbish... Anyway, I don't get how to read these markings correctly.
EDIT2: Multimeter gives me 1755uF.