Hi!
My own personal store of device specs and equivalents gained from over 35 years doing Audio, TV and Industrials!
There is also:–
2SK30, and the J100, J200 and J300 series as well! Most JFETs rarely require a voltage rating of more than about 25–30V!
As you have access to a C.T., it might be worth checking eBay, AliExpress, Bangood, etc., etc., for cheap "goodie bags" of 10–20 or so and trying a selection, then marking their tops with a little dot of paint from a paint marker and keeping 'em in a clearly labelled bag!
Chris Williams
PS!
If the FET you showed us came out of a meter or similar piece of T & M, you might require one with low leakage characteristics, in which case, the parameter to look at is "Igss".
The E200/E300 and J208/J209 are characterised for low gate–leakage, and there's others as well!
If you need to check Igss, bias the gate about –3V with respect to source and interpose a 10M resistor in series with the gate lead – 1nA leakage will drop 10mV across a 10M resistor!
You'd need a nanometer with an electrometer–type input amplifier to try and measure Igss directly – Keithley 616/617 for instance!