For sale is a lot of (8) new old stock Motorola transistors, left behind in the radio electronics inventory of my late father.  He was an active HAM radio operator for over 70 years, and was a radio and other electronics serviceman for much of his life.  He always kept a generous inventory of spare and replacement parts on hand, for speedy service calls for his customers, available for walk-in customers to his service shop, and handy for his own electronics projects.   All his components were stored in a dry, smoke-free environment. 

I have no knowledge of testing these items, but I have had very good feedback from other electronics that we have sold from this "collection."  I found some helpful information on line, that may help you decide if these are the transistors that you are looking for:

2N4870
Unijunction Transistor (UJT)
TO−92 Type Package
Description:
The 2N4870 is a PN unijunction transistor in a TO−92 type package designed for use in pulse
and timing circuits, sensing circuits and thyristor trigger circuits.
Absolute Maximum Ratings: (TA = +25C unless other specified)
RMS Power Dissipation, P D 300mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 25C 3.0mW/C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RMS Emitter Current, IE 50mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak−Pulse Emitter Current (Note 1), I E 1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emitter Reverse Voltage, V B2E 30V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interbase Voltage (Note 2), V B2B1 35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range, T J −65 to +125C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, Tstg −65 to +150C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Duty cycle  1%, PRR = 10 PPS
Note 2. Based upon power dissipation at TA = +25C
Electrical Characteristics: (TA = +25C unless other specifie

I hope that these are ones you can use!!

Thanks for looking here!!

(misc 5)

(I have lots of other small electronics from this inventory, and if you would like other items, I will ship them in a combined shipping, and only charge shipping for the heaviest item, and all the other items you include will ship free.  Check out my other listings!!   Go ahead and buy the items, but DON'T PAY until I send you an invoice with the shipping reduced for you.)