(!!!) (#1 27 Balloon Single) G-27 Majestic balloon mesh-plate NOS 1931 (4.5ma)
(!!!) (#1 27 Pair) 27 Philco Balloon used/test like new around 1930 - super fine mesh-plate - same internals (6.6ma and 6.8ma)
(!!!) (#1 27 Pair) C-327 Cunningham Balloon used/test like new around 1930 - mesh-plate - same internals (6.6ma and 7.2ma)
(!!!) (#1 27 Single) C-327 Cunningham Balloon NOS around 1930 (9.8ma) (High Ma and Gm)
(!!!) (#2 27 Single) 127 Arcturus Blue Balloon used/good 1930 era in white box (4.3ma)
(!!!) (BEST PAIR) G-27 Majestic balloon mesh-plate NOS 1931 (4.4ma/4.6ma)
(!!) (#1 UY-227 RCA Pair) UY-227 RCA Radiotron Balloon used/good 1930 era (4.8ma and 5.0ma)
(!!) 27 Philco balloon used/tests good, fine mesh-plate 1930 (4.8ma)
(!!) SY-227 RCA Sylvania Balloon used/good 1930 era (4.1ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.7ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (4.0ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (4.6ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (4.8ma)
(!) (#1 27 Balloon) C-327 Cunningham Balloon mesh-plate used/tests like new, mesh-plate 1930's (6.5ma)
(!) (#1 27 Balloon) C-327 Cunningham Balloon mesh-plate used/tests like new, mesh-plate 1930's (7.5ma)
(!) (#2 27 Balloon) C-327 Cunningham Balloon short mesh-plate used/very good 1930 (5.7ma)
(!) (#2 27 Single) 27 Raytheon NOS 1940's (4.6ma) (high Gm)
27 National Union engraved base used/good 1930's (4.4ma)
27 Philco engraved base used/tests like new 1935 with "Pep Boys" test label on glass (4.6ma)
27 RCA Cunningham Radiotron 1930's used/good (4.1ma)
