Marlin Model 99 22lr Semi Auto-

[tn_junk]

Gun has been in the family, sort of, for about 40 years. Was left in a closet, next to a bathroom, by the owner for 35 of those 40 years. Rusted, stock split in several places, etc. I am reworking it to use plinking.
My question- This gun looks exactly like a Marlin Model 60. In fact, that's what I thought it was before I got the rust cleaned off the barrel enough to read the model #.  All the stuff on the internet says that the Model 99 has a flat top receiver, without the dovetails, and no serial number. This gun has the dovetails, doesn't have serial number. What exactly do I have?
Sure some of you Marlin specialist will know.

Thanks

alan

[Uncle]

I have a Marlin 99. It has the dovetail top and I have a scope on it. It has a serial number too. I thought that it was only a longer barrel version of the 60. Mine's a shooter!

[EVOC ONE]

I believe to Mod 99 was the first version of what was to become the Model 60.  I've read that the "99" designation was in reference to its year of introduction (1959).  That designation was discontinued in the early 1960's when it became the Mod 60.

The lack of serial number is common with firearms manufacture prior to the 1968 Gun Control Act.  I cannot comment on whether it should have a flattop receiver.  The only Mod 60 version I recall seeing with a flatop receiver was a model labled through Western Auto Stores. I believe it was called a Mod 140, but I'm not sure.

Marlin re-used the Mod 99 moniker later with the 99M1 and 99M2.  Each was a carbine version fashioned after the U.S. M-1 military rifle.  Both had grooved receivers as they had a rather unique rear sight and wood upper handguards.