Help needed to identify the year of my engine

[primerate2]

I need a hub for the

lower unit and I need to know what year this engine is. The only numbers I can find are on the head.
The starboard head has numbers that look like this

8 M 7

77 1

200 HP

The port head has this number 331490-1

Here are some pictured of the engine and hub
. Thank you for your help.

 

[joereeves]

Model number is usually on......

Small plate attached to the port transom bracket.
Decal on top area of swivel bracket, between swivel bracket and long exhaust housing.
Core plug (looks like a small freeze out plug) on powerhead area.

Have you looked at these areas?

 

[stillrecon]

My 9.9 Mariner had the serial number stamped on the frost plug......might be the same for yours.

 

[primerate2]

yes there ate no decals or plates anywhere. I did fine 8 M 7 on the starbord head and 200HP could it be a 1987?