||In 1950 H&B began putting "REG. U.S. PAT.
OFF" underneath the center oval. This replaced the
"TRADE MARK REG." which had been there previously.
Please notice that the wording begins under the O in Louisville and
ends under the letter K in KY. Also, notice that the & in
"H&B" in located under and between the 1 and 2 in
||In 1961 the type set changed in the wording "REG
U.S. PAT. OFF." and is now a smaller font. Also, notice that the & in
"H&B" is directly below the 2 in "125"
||In 1965 the entire "REG. U.S. PAT. OFF." is
dropped and replaced with the (R) Registered Trademark is placed
after Louisville Slugger in eh center oval.
||The change in 1969 is very subtle. The labeling
is the same as the 1965-68 era except for the P in the word
Powerized just above the center oval. Notice that the P in
Powerized is flush in the 1965-68 era where as the bottom loop of
the P now cross over.
||In 1973 a (R) Registered Trademark is place above the
d in Powerized just above the center oval.
||In 1976 H&B began placing the model number on the
barrel next to the word genuine. In addition, in 1976 a
Liberty Bell stamp replaces the word Powerized for just one year to
commemorate the Bicentennial
||In 1977 the Liberty Bell is dropped and the model
number remains on the barrel. Note that the Powerized is back
on and the model number remains on the barrel
||1980 marks a significant change in labeling for
H&B. The center oval stamping is completely changed to
read LOUISVILLE SLUGGER. The oval is rather large measure
about 4.5" across.
||In approximately 1983 (note there is some overlap
during that year) the center oval is made smaller to only measure
3.5" across. Subsequently the 125 also shrinks
significantly. Also note that sometime in 1985 and running into
part of 1986 player signatures are foils stamped on eh barrel rather
||In 1986 a (R) Registered Trademarks is placed after
the LOUISVILLE SLUGGER under the players name on the barrel
||In 1990 the LOUISVILLE SLUGGER under the player's name
is dropped completely.
||Beginning in 1991 team names are burned under the
player's names were Louisville Slugger was previous to 1990
||In 1998 the font or type set for of LOUISVILLE SLUGGER
in the center oval changes and becomes shorter and wider. The difference
||Beginning in 1999 the MLB logo is stamped on the
barrel. Please note that some players requested that this be
removed during this time (i.e. A ROD).