I bought a 1951 featherweight but its missing the brass "badge" or plate
 

does anyone know if I can buy a replacement, I am going to be reselling the machine and I am not sure it will sell without that piece with the "s" on it. This is a bicentennial limited edition and that may be harder to find.

My 1951 featherweight does not have a S on the plate. It is the gold seal Singer Centennial seal with a little bit of blue. Only my newer featherweights (1958 and up) have the S on their seal. Maybe you are looking for the wrong type of seal for your machine.

Shelbie is correct. I have a featherweight Centennial (not bicentennial) born in 1951. Here is a photo of the seal. Perhaps you could find one on eBay?[ATTACH=CONFIG]307661[/ATTACH]

its not there at all, its missing... i would like to know if it can be bought and put back on. thanks for the picture thats the "badge" i was talking about.

Try ebay???

Have you tried Glenn Williams in Florida? He is THE featherweight expert, and is the only one I can think of who would have the part you need. He has the part ANYONE needs, no matter what part it is!

The 1851-1951 badge for the Singer 221 is usually NOT available because it would have to come off from a machine that had one. Sometimes there are machines that have other issues that can not be saved and so motor, etc are removed and sold separately.
I have NEVER seen the metal badges for sale anywhere. They are riveted on and it would be a big problem getting one off still intact and putting it back on another machine still without bends or crinkles and using rivets would be a big issue.
Not all machine made in 1951 had the 1851-1951 badge. It is generally accepted that the gold badge with the blue oval became available in around 1950. So, you will see some 50's, some 51's, some 52's with it.
But, I have a single owner, bought new that was made in 1948 that has the 1851-1951 badge. They refilled the parts bind as needed and just reached in and got what they needed so, you will see 1950, even a 1952 with the 1851-1951 badge.
An earlier reply was correct that the badges that are available for sale are the ones that were a decal with a big 'S' that came on the white (pale turquoise) models from the 1960's because they were not as sturdy and did get damaged and are often missing. As far as resale, you have the group that wants the machine to sew and the group that wants the machine for display. Some of us love them so much and we want our cake (machine that looks good) and eat it too (machine that looks good to sew on).

he has one, thanks,

My FW, dated Oct 31, 1951 doesn't have a centennial badge. Was it hit and miss in 1951, or was there a cut off date?? Curious minds want to know!! Thanks

Mines not badged as Centennial:(
 

I also have an October 31, 1951 machine without a centennial badge,