This has the f32 type code and a November 1971 date code (B1K3). This was tested on our Triplett 3444A with a result of 105% of the average new value for both sections. Do not buy this item and then ask us to falsify the forms.
I was amazed at how well this tube tested! On my tester it pegged the needle on both sections of the tube - much much better than I expected! Great tube, great seller. WDBA absolutely!