Anyone can tell me more about this combined oil temp and pressure gauge? Options

[Marcel Aircooled]

My 1973 914 with 2.0 liter 1974 GA engine came with a non original combined temp and oil pressure gauge. At first glance it looks like a normal VDO gauge, maybe for 911 original but looking closer it seems the letters and numbers are hand painted or some sort of transfer decals. There is no item number and at the back there is also no number or date stamp. Could this be custom made by someone? Here are some pictures







This is the sensor that is installed



The temp meter works but the pressure meter works only from time to time and sometimes drops all the way down or jumps up to the maximum. I took it out and replaced it with an original fuel gauge with just the pressure warning light and a 60mm temp gauge in the console.

Maybe someone can tell me more about this gauge?

[Montreal914]

This is a 911 gauge. Nice upgrade to your gauges but obviously non 914 stock if you are a purist. If your car is a 73 2.0, then it should have the center console with the oil temp gauge. A wire could have been extended from that gauge to the 911 gauge for the temperature part of the 911 gauge.

The cylindrical sender you have on the engine is a typical upgrade 914 owners i stall to get the oil pressure readout. This being the two pole sender (one is for oil pressure, one is for low pressure warning light). This sender needs to be grounded which seems to be the case via this brown wire you have near it. You might want to check how good of a ground you have there as this might be the cause for the bouncing gauge.