This Skytec Tubester set for the Collins 32S-1, 32S-2, 32S-3, and 32S-3A, is in excellent condition.
The Tubster sets are a Collector item and very hard to find.
They will replace most of the tubes and according to the literature, will increase performance.
I am selling them as is as described.
The information sheets are included and they are a breeze to install.