if that bar is a real bar/ingot,maybe one of the folks in the articles i posted,
can help with the bar/ingot authenticity,sorry im not an expert,so couldnt help
you more,just what i could glean from the net,like i said get it checked out
pg37-pg discusses the use of the Internal Revenue stamp
pg 37,under heading letter K,3rd par
all the posted info in this post is from
http://www.cawa.fr/IMG/pdf/how.pdf
Several versions of the Internal Revenue stamp are known. The standardized
version was round, reading U.S. INTR. REVENUE*, around a picture of a pair of scales
above a shield. This appears on a Harvey Harris bar photographed in the Numismatist in
1911, well before the forger got to work (Adams 1911), so we may be confident of the
authenticity of the bar and the Internal Revenue stamp.
yours has no shield,so prob not a Harvey Harris bar,at least none that i can see
yours doesnt appear to have a tax stamp
and in all that reading,i could not find a reference to a jc
pg48 part XI. Determining the authenticity of the silver bars.
A. Genuine Silver Bars.
Special economic circumstances helped silver bars survive in the nineteenth
century. The silver bars were stamped at a price of $1.2929 an ounce, but the free market
price of silver collapsed from 1873 to 1900. The bars were no longer worth what they
were stamped – and they were not worth melting. Since most countries used the gold
standard, the value of gold did not move. This is why it is not surprising that genuine
silver bars have survived, whereas genuine gold bars have not survived in large numbers,
except for those recovered from the Central America
pg59 lists GENUINE SILVER BARS
pg63 SILVER BARS: AUTHENTICITY UNDETERMINED
i did not see your #s listed
you say it Reads 4.02oz and says G.024 S.972
It has he initials J.C. on the back
i see
G.024
S.97?
weight 4.20 a scratch looking mark and O
a better pic could help