AVR Freaks

It is impossible to judge a used instrument (this one, but also other ones) entirely from its name and brand, a photo and an eBay description. So there is a risk. There would even be a risk if you could first play with the instrument.

Regarding

Like all old instruments, it had (past tense) that accuracy. If it hasn't been serviced and calibrated then the figures in the datasheet don't mean much. It could stillb e in calibration or it could be well out of calibration. Again, this applies to all such offers of old instruments, not only this particular unit.

To give you an indication about the possible age of the PM2525, Philips sold its testing and measuring device division in 1993. Believe it or not, they sold it to Fluke. For a period of time Fluke continued to sell the Philips products as is. But over time they replaced every former Philips device with own devices or withdraw them from the market. The offered instrument still has the original brown Philips front plate, so my first guess would be that it is from or around the pre-Fluke days.

Maybe one interesting thing to know, Fluke hardly knows (or want's to know) about old Philips measurement instruments. It's unlikely you will get manuals or support from them.