No published sn data.
25-50 USD
It sounds to me that you have a Model 1908 hammerless model in .25cal.your serial number would indicate that this pistol was made in the year 1919.
200 or so
Ask a gunsmith for help
@ 1972
@1914
25-100 USD
25-125 USD or so
Blue Book of Gun Values will help.
Around 1972 or 1973
somewhere around 1973
value depends on overall condition.....