dating of two B&S engines

I have here two B&S engines and I would like to know how old this engines are. The first is a model 60331, type 942047, serial number 163396 and I find another number 5905060.
The second is a model 80202, serial number 0016-01 730, serial number 1197766.
Who can tell me more about this engines?

Model Information & System Of Names
Every Briggs & Stratton engine has a basic model letter or number such as A, WM, ZZ, 5, 23, etc. This will be found on the metal nameplate if it is present on the engine. The early F Series has the Model & Serial number stamped into the crankcase.

Early engines (up to somewhere in the 1940's) have a brass plate on the shroud and later engines have a zinc or aluminum plate on the cylinder shield.

Engines having special features are identified by additional letters or numerals assigned to the basic Model Letter or Number such as AL, 8R6, NS, etc. For Example the 8R6 is a model 8 engine with a 6:1 reduction gear and the NS is a model N with a suction carburetor. An explanation of these suffix letters is given below.

Could you tell me the model number please.

Stu.

The first is a model 60331 and the second a model 80202. I have also a model 6 and I know that this engine is from 1954, and I like it to know how old my engines are and another numbers stay in my previous post.

You should be able to find out all the information you need here.

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Stu.

That's the one I use Stu. bbs, you really need to find the engine Type, e.g. ZZ, M series etc....

That's what I was trying to get at Dan, but I'm sure he can sort it out himself now.

Stu.