Postby oel » Mon Jan 11, 2016 8:01 pm
Your number 2 is the 1865 -1905 weight indication mark. These weight indication marks consist of a series of 20, with the numbers 1 to 20. Multiply the number by five to obtain the gross weight in grams. In your case, the chain weight 2x5 =10 gram. These marks give no guarantee by themselves but must always occur in combination with hallmarks or duty marks.
Please try to embedded your images correctly!
Oel.