All the characters found in DOS (using charset=CP437):

A, a, (), [*1], (), (), (), (), (), α()    P, p, π()
B, b, β()Q, q
C, c, (), ()R, r
D, d, δ()S, s, (), Σ(), σ()
E, e, (), (), (), (), (), ε()T, t, τ()
F, f, Φ(), φ()U, u, (), (), (), (), ()
G, g, Γ()V, v
H, hW, w
I, i, (), (), (), ()X, x
J, jY, y, ()
K, kZ, z
L, l(), ()
M, m, μ()Θ(), Ω()
N, n, (), ()(), [*2], (), ()
O, o, (), (), (), (), ()$, (), (), (), ₧(), ()

Instructions for getting and characters in MS-DOS (CP437) using MS notepad:
*1 - to get : Open notepad and enter "A" and save in UTF-8. Open file as ANSI and look for " A" string. The space in the middle can be cut and paste into notepad (in the ANSI mode) to provide the character.
*2 - to get : Open notepad and enter "A" and save in UTF-8. Open file as ANSI and look for "-A" string. The hyphen in the middle can be cut and paste into notepad (in the ANSI mode) to provide the character.