Your Marlin Glenfield .30.30 model 30A was made in 1974. For this perticular rifle, take the first two digits of the serial number (Yours are 26). Subtract 26 from 100, and you get the year of manufacture, which is 1974. Hope this helps.
I would check the lower tang,under the lever.
Marlin
Model variation
30
there is a marlin collectors site or gunbroker.com
The value of a Marlin 3030 Glenfield 30A in mint condition typically ranges between $300 to $500, depending on factors such as the specific model year, any unique features, and current market demand. Collectors often seek out well-maintained examples, which can drive prices higher. For the most accurate valuation, it's advisable to check recent sales or consult with a firearms appraiser.
The Marlin model 336 will sell for between 200-350 dollars,depending on overall condition.
all glenfields,sears,and marlinshold 6+1
By including the serial number in your question,we will be able to answer when your Marlin model 336 was produced.
All depends on condition, model, accessories,...etc.
With the serial number that you provided,your Marlin model 1893 rifle was made in the year 1899.
Your serial number indicates that your Marlin model 30A was made in the year 1979.