The model number is typically on top of the rifle above the trigger. usually it says 1938. As for the serial number, Red Ryder's usually don't have serial numbers because they are mass produced, but you will find a "LOT" number assigned to the rifle.
Daisy offers a service to identify older Daisy airguns. see the link below
The model 111 was a Daisy Western Carbine (Not a Red Ryder) It was made from 1963 to 1978. The Daisy No: 111 model 40 (Not Model 111) was a Red Ryder and was made from 1940 to 1952.
None of my Bluebooks list Red Ryder's or Champion by Lot number, but the Daisy web page has a free service to give you more information about your Daisy. ( See the link below.)
There are over 28 different version, made over the years, of the Red Ryder. Daisy doesn't bother to put serial numbers on them just batch numbers. There have been thousands made. Originally the Red Ryder Was the No. 111 model 40, then it became the model 1938 around 1972. Daisy offers a service to identify individual models. See the link below
The model 90 was not a Red Ryder model, it was the Sportster model made from 1973 to 1978
1973 is a year, not a model number. I suggest you contact Daisy and ask them. See the link below
The lot number is usually on the right side of the barrel.
None of my Bluebooks list Red Ryder's by Lot number, but the Daisy web page has a service to give you more information about your Daisy. ( See the link below.)
There are 8 Variations of the Red Ryder Model 111 and 14 different Red Ryder 1938 models. Your best bet is to contact "Daisy" they offer a FREE service to answer questions about Daisy products. See the link below
Daisy made a model 94 Carbine from 1954 - 1962, they also made a model 111 western carbine from 1963-1978. I can find no information on a Red Ryder 1938 carbine. However the 1938 Red Ryder is still in production.
There are over 28 different version, made over the years, of the Red Ryder. It started in 1940 as the number 111 model 40. during the 1970's it became the model 1938. It is the most produced BB rifle ever made.
The model 1938A-B was made in 1978