found something: h-t-t-p://coins.ha.com/itm/german-states/german-states-bavaria-otto-i-gold-10-mark-1911d-/a/231241-62048.s
A more specific answer:
You should have your coin authenticated by a dealer or appraiser who's familiar with German coinage. sammler.com, a major German collectibles site, indicates that an unworn 10-mark Bayern piece contains 3.583 gm of pure gold, giving it a metal value of at least $125. However it better condition its value could be much higher as a collectible. Values as of 09/2014:
Slightly worn - US$228.00
Almost no wear - US$293.00
Uncirculated - US$423.00
To clear things up:
100-650 USD or so.
For the series of Liberty Head nickels, 1911 is the highest mintage year. In average condition values are $1.00-$3.00.
For the series of Liberty Head nickels, 1911 is the highest mintage year. In average condition values are $1.00-$3.00.
300-500 USD
The 1911 Barber dime (not Liberty) is a common date of the series. Retail values for coins in average circulated condition is $2.00-$5.00
value depends on overall condition...........
100-600 USD
The 1911 Philadelphia issue is not rare or scarce and is readily available in MS-63 and has a retail value of $2,250.00. However the Denver issue is the key to the series this coins value in MS-63 is $25,000.00
200 - 2000. You did not describe it. More than likely 500-800.
The 1911 Liberty Head Nickel is the highest mintage year for the series and most coins show heavy wear and have values of $1.00-$3.00 better grade can be has high as $30.00 for circulated coins.
The value of a dime from 1911 depends on its condition. The lowest a 1911 dime has gone for was $3 and the highest was over $400, however that dime was in mint condition.
There were $5 gold coins minted in 1911 as part of the Indian Head eagle series. They are popular among collectors and can be valuable depending on their condition and rarity.