What is the value of a 1939 deutsch mark coin?
It depends very much on the coin's condition and mint mark. A very good site for German coin prices is www.sammler.com However most of it is, not unsurprisingly, in German.
The page linked below gives values of 1939 1 DM coins. To translate, ss = well worn, vz = moderately worn, unz = uncirculated. Use a conversion factor of 1€ = $1.45.
You are asking about a 1 Deutsche Mark coin from Germany (KM#110). The value depends on its condition - about US$0.75 in Very Fine condition, about US$1.00 in Extremely Fine condition, and about US$6.00 in Uncirculated condition. The coin was produced at four different mints - Munich ("D"), Stuttgart ("F"), Karlsruhe ("G") and Hamburg ("J") - but for this particular year there is no difference in value.
There is no "E" mint mark on any US coin, the 1928 Peace dollar can have only one mint mark an "S" which is on the reverse just above the tip of the eagles tail. If there is no "S" the coin was struck in Philadelphia, if it has a "S" the coin was struck in San Francisco. Please look at the coin again because the difference in value of the coin is very large…