That Colt challenger was made in 1952.
1928, it will be date code stamped on the barrel. See the Manufactured Date page on the Remington Society of America for details.
1968.
No, there is not such thing as the "seria" desert.
You must provide the serial number.
The Italian seria (drama) opera in two acts 'Idomeneo'.
70-100 or so years old
Opera Seria and Opera Buffa
Plots drawn from Greek antiquity were the basis for numerous examples of opera seria.
Now it is in Seria.
Inter Milan have so far won 16 Seria A titles.
Impossible to say without you providing a serial number to your Winchester model 1894 rifle.
You have to give a manufacturer or trade name and model before the serial number will tell you anything.