OP,
nice to know about,
My take: get your own tester, have it for life. don’t let rusty hardware worry you, almost all from that era rusted, thin vinyl peeled, just cosmetics.
this one, 30 day return
I spent hours standing in front of this, testing every tube in my Fisher President II before Thanksgiving every year, people lined up behind me, separate bags for each component (9) till my feet hurt. Told my wife: "I want my own tester!!!" She got me my little Accurate 157 for my birthday.
I would buy this Accurate 257 in a minute if I didn’t have mine. I got one for a friend.
7 day return, Reverb supports the buyer, they helped me without hesitation.