![Tung-Sol 5687 horseshoe (D) getter vacuum tubes tested and guaranteed 1956 – Biro Kemahasiswaan dan Alumni UMSU Tung-Sol 5687 horseshoe (D) getter vacuum tubes tested and guaranteed 1956 – Biro Kemahasiswaan dan Alumni UMSU](https://i.ebayimg.com/images/g/Tk8AAOSwrSBkh6c2/s-l500.jpg)
Tung-Sol 5687 horseshoe (D) getter vacuum tubes tested and guaranteed 1956 – Biro Kemahasiswaan dan Alumni UMSU
![MG on X: "You know that silver layer at the top of vacuum tubes? That's also a getter! It's just a different type. These things get tailored to the specific manufacturing process MG on X: "You know that silver layer at the top of vacuum tubes? That's also a getter! It's just a different type. These things get tailored to the specific manufacturing process](https://pbs.twimg.com/media/FQViEsGVgAEBDcQ.jpg:large)
MG on X: "You know that silver layer at the top of vacuum tubes? That's also a getter! It's just a different type. These things get tailored to the specific manufacturing process
![Dynaco Mullard EL34 / 6CA7 Vacuum Tube XF3 Blackburn, OO-Getter – Biro Kemahasiswaan dan Alumni UMSU Dynaco Mullard EL34 / 6CA7 Vacuum Tube XF3 Blackburn, OO-Getter – Biro Kemahasiswaan dan Alumni UMSU](https://i.ebayimg.com/images/g/~h8AAOSwVuJkF2AA/s-l1600.jpg)