$1 sábanas

The sequence appears to have been:

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
black C B NUM. large, large
small, small

 

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red A A No. NUM. large, large
black B A NUM. large, large
red C A No. NuM. large, large
  D      

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red A B No. NUM. small, large
B
D

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red A B No. NUM. large, large
D

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red E B No. No. small, large
F

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red E B No. No. large, large
F

 

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red D C No. No. small, small

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red G C No. No. small, large
H
I
J

 

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red J C No. No. large, small

 

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red K C No. No. small, large
N
O
P
Q
R
S
T
red K C No. No. small, large
N
P
Q

Colour
of series
Series
letter
ImprintAbbreviationSize of numbers
(left, right)
red G C No. No. large, large
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
red O C No. No. large, large
P No. No.
red P C No. No. large, large
Q No. No.
T No. No.