THE VW Temperature sender values range and colours, mix and match guide.

the spade type on the sensor is just an age thing, the button head is early and straight spade later thing. I think all the ones you'll get from VW now are the straight spade type, the important thing is to buy the right type of sensor as they have different ratings.

You should always try to buy genuine if you can help it for sensors, as the pattern ones are sometimes inaccurate. 1H0 919 563 is definitely a mk3 golf mfa oil sensor ignore what the websites say this one is 18+VAT from VW so not too bad