Don't know value, but based on proofhouse.com a 273921LWwould have been made in 1968.Between 1950 & 1969 serial numbers had the suffix LW after the number and between 1969 & 1977, they had various prefixes A thru M. 1977 & 1978 had suffix R after the number.
what is a 1978 .38 special colt cobra serial #m52453 nickel plated with pearl handle worth?
colt cobra 38 special serial number 139350
That sn does not follow normal convention for the range Cobra's are in. Recommend you call Colt.
1969/1970
Made in 1969.
100-500 USD
your cobra made about 1953. value would depend on condition i.e, finish, grips, bore, etc.
made about 1952
value depends on overall condition..................
50-500 usd
Don't know value, but serial # H8xxxx shows it was produced in 1975. (H66001-H99999)
The value is around 900$.