Just found a few of the bulbs new in box. They are used a the oscillator voltage regulator in the BC-348. Also used in some test equipment. Worth $5.00 each? Available Thanx Lloyd Godsey KK7IZ kk7iz at cox.net 480-620-7145 http://www.lloydsdipsydumpster.com/ http://antiqueradioarchives.com/ Skype: lloyd.godsey