Thank you to all who replied and shared their knowledge. I’ve been reading zillions of posts on this forum and learning a lot.
I found more info online at Sewinggold.com . The head looks identical to the Tacsew 111w-155, which in turn is built by Typical.
From https://sewinggold.com/product/tacsew-t111-155/ :
“Tacsew sold their industrial line to Consew so they will no longer be distributing industrial sewing machines. The majority of their machines were based on the brand Typical. The T111-155 is the same as the Typical GC6-7-D which we sell.”
More info on the Typical GCG-7G, from https://sewinggold.com/product/typical-gc6-7-d/ :
“
Specifications
Speed, Max (S.P.M.): 2500* Clearance Under Foot: 1/2" (13mm) Needle Bar Stroke: (37mm) Stitch Length, Max.: (8mm) Needle: 135 x 17 and 135 x 16 for leather Bobbin - Metal: 18034 - Pre-wound : M Hook: Large Horizontal Rotary Workspace: 10 5/16" (260mm) Bed Size: 7" x 18-7/8" (178 x 475mm) Stitch Type: 301 *Speed depends on thread, material and operation.
Applications
For sewing medium to heavy-weight material such as leather, vinyl, upholstery, synthetics, canvas and various coated and laminated products
Designed for stitching such products as auto, boat and furniture upholstery, tarpaulin, covers, sails, tents, camping trailer covers, awnings, umbrellas, tops, bags, luggage, handbags, travelware accessories, sports and camping equipment, wearing apparel, outdoor clothing, canvas shoes, slippers, orthopedic appliances etc
Features
Long stitch - (8mm)
Large bobbin. Bobbin can be changed without removing article being sewn
Thread release finger (for heavy thread)
High presser foot lift - 1/2" (13mm)
Auto Lubrication
All gear driven hook mechanism. Large horizontal axis hook
Adjustable reverse stitching can be same length as forward stitch
Simple adjustment permit raising and lower of the center foot which allows for sewing different thickness of materials and thus assures positive stitching
Walking feet, needles and other attachments interchangeable with most other brands walking foot machines
Feet can be changed for special operations
Standard attachments easily installed
Compound feed, walking foot mechanism insures even feeding of material
Locking stitch regulator prevents changes in stitch length from vibration
I’ll edit this post later to add pictures; I’m using a tablet without storage right now and can’t upload pics.
Judy