I would certainly retain it. Any pickapart wreckers in your area would have millions of them on probably any aisen carb you find.
I should imagine it would be easy to test off the car though. Earth the body of the solenoid and apply power to the lead, or if it is two pin, white/black wire to neg terminal and the other to positive and check it functions. Presumably applying power will pull the pin in, and with power out it will pop off. And check the copper seal isn't damaged when you reinstall it.
Would be worthwhile checking the engine timing also, as this can result in run on if incorrect.
And welcome :yes: