To answer the question regarding date of manufacture, I checked with a
reputable site to decipher the serial number.
This info puts the date of manufacture at April of 2010.
From the site:
Post-1984
The modern Ampegs of the St. Louis Music era were all made after 1985. The amps made since 1988 have a 10-digit serial number which is encoded for model, country, date, and year. The serial number can be broken down as follows:
Digits 1, 2, 3 = Model
Digit 4 = Country Code where:
U = U.K.
D = domestic U.S.
W = worldwide
Y = Europe
Digit 5 = Year where:
A = 1988
B = 1989
C = 1990, etc.
Digit 6 = Month where:
1 through 9 = January through September
0 = October
A = November
B = December
Digits 7, 8, 9, 10 = serial number
