toogie

I don’t have any info on this machine. I don’t even know if I threaded it correctly. Can you even see the green thread I ran through it. It must be rightly threaded tho bc I stitched on this scrap, adjusting stitch length. I wish the gold decals showed up more. Do you know the date of it, where people get them refinished, etc? I took these photos and one more, bc I can’t read the top.

toogie

Here is the top photo

LGJARN52

I did a search on International Sewing Machine Collectors Society and without a alphabetical prefix 783008 falls into the first catagory as being made in 1871. That's all I could find out. Hopefully someone else knows more.

OurWorkbench

Actually, the serial number 7830008 (it happens frequently that a digit is dropped when looking up serial numbers) is a 15k from the end of 1887 or probably early 1888 and made in Clydebank Kilbowie per https://ismacs.net/singer_sewing_mac...-2-9-2024.html
My guess is that it is a 15K3 as at one time I believe it had Tiffany or Gingerbread decals, which are my favorite and would have multiple colors, besides the gold. Some are more blue and some are more pink. https://ismacs.net/singer_sewing_mac...ic-decals.html
I am thinking that if it is a 15K3, it will have what is considered a long beak shuttle. The picture looks like it may have a motor (or hand crank) boss on it which would be under the hand wheel. I didn't think that they made the motor boss that early.
There is some info about 15 class machines at https://cyndykitt.com.au/machines/info-15.htm and shows the long beak shuttle which would be like the 15-1 machines. Usually the machines made in USA and Kilbowie had the same variety numbers, but not for the 15s.

I think that it looks in pretty good shape, especially for the age. It is suggested that simple cleaning the machine with sewing machine oil, is best for these old machines. Some have used Glenn's method as shown at Cleaning and repairing the Shellac clear coat on Vintage sewing machine heads

toogie

I think it might be a small case ‘c’ before the numbers . Can you make it out in this picture?

toogie

Also it doesn’t have the bullet shaped bobbin case so I doubt it’s 1800’s, I don’t know.

dunster

It looks more like a G to me in the picture. If so, it's a 115 from the Elizabethport factory in NJ, number assigned in 1920.
G- 7827576 7832575 115 5000 February 11 1920

WIChix

Most, but not all 115s have three holes in the bed, two are to the right of the needle plate, one is slightly towards the back of the bed, aligning with the right hole. The holes are not visible in the original post, being obscured by the fabric.

OurWorkbench

Actually, the round bobbin was patented in 1878 per https://patentimages.storage.googlea...2/US208838.pdf And while I called it a long beak shuttle, the Singer Improved Family evidently called it ‘highpoint’ shuttle. The Improved Family machine was the precursor to the class 15 machines. You can read about the Improved Family machines at https://ismacs.net/singer_sewing_mac...g-machine.html and the highpoint shuttle can be seen about the middle of the page. I don't think there is any alpha as most (with very few exceptions) serial numbers I have seen have been pretty well centered on the plate. A picture of the bobbin area would help to confirm that it is probably an early 15. The 115 has a different bobbin area - there is a thread about the differences between a 15 and 115 at this thread Singer mdl 15 vs the 115, what's the difference? However, it is using a later class 15 as a comparison, rather than the early ones that used the IF ‘highpoint’ shuttle. Also if you look at this picture of the 115 https://www.quiltingboard.com/attach...806b6f793.jpeg you will note that there are three holes to the right of the needle area. Two side by side for attaching the seam guide to and one further back.

I'm still going with an very early 15k and it takes a different bobbin, which is fortunately still available at https://www.cutexsewingsupplies.com/...32221281812533
I would also like to see a picture of the hand wheel end of the machine.

From my understanding that the "C" serial numbers did not go as high as the numbers on yours.

OurWorkbench

The Improved Family machines had a fiddle base, rather than the rectangular bed. If it is a 15K with a high point shuttle you will need the manual for the IF to thread the shuttle. One can be found at https://archive.org/details/Singer_i..._1891/mode/2up