Thanks Pam! The manual says it does zig zag stitches so you are right.

I would venture a guess that the one with the raised part is the "free motion" plate so that the feed dogs do not contact the fabric and you can move the quilt around under the needle.

Great find, lucky you :D

it's a 306 - it takes SPECIAL NEEDLES... do NOT use regular machine needles, they are too long and will damage the bobbin case.
good news, you can get needles at:
http://www.allbrands.com/products/abp15426.html
one order will last you the rest of your natural life...
I have a 306 and a 319 = mechanical stitches - no motherboard to go blooey..
I've been using the 319 for piecing... I love them both

Congrats on the 'find'. Read up on how to clean up that machine and get her oiled and greased in the proper areas.

Hopefully it'll be a smooth running machine. Check the wires before plugging in to make sure they're not exposed/frayed/dry rotted, etc. Safety first

WOW! What a great find!

I have a 306 W Machine they are great , but do take a special needle. It can do other stiches . The black disk is the disk for special stitches . You probablay have the zig zag stitch disk on the machine.
I have another machine ( computerized) but always come back to my good 306W.
You are a lucky , lucky lady!

Can't get any luckier than that! Congrats.

What a beauty. I'm glad use rescued it.

Great find! Enjoy, enjoy, enjoy!