Early 1900s Wm Ainsworth & Sons Precision Balance Scale No. 7356, Good Condition

Description

Early 1900s Wm Ainsworth & Sons Precision Balance Scale No. 7356, Good Condition.
I believe this is an early 1900s Balance scale from Either of “2” companies.
1. Wm Ainsworth & Sons, Denver. Colorado USA
OR
2. Braun, Knecht, Heimann Co. San Fransisco “ this company made a lot of gold scales”
I’m thinking the Ainsworth Company was contracted out by the S.F. Company to make their scales for them.
Both companies were founded in the 1800s. The Ainsworth company had a name change in 1899 when the mans “2” sons joined the company. This could be the first in the series of the company’s balance scale before they went to Analytical Assy Balances. Plus the scale does not have a drawer attached to it, I’m thinking that came along as different models and innovations were made.
I’m not an expert in scales, want to make sure that I give the best description as possible, do not want to mislead anyone.
There are couple of issues, there is a ding on the upper left top of the sliding door, and a chunk of wood taken out of the upper backside of the scale, plus some stains and surface scratches. The brass knobs all have a deep aged patina to them w/ light spotting. I have not attempted to clean the item, only wiped it down. The door slides very smoothly up and down, the item has the original weights and string.
The item displays very well, all of the glass is intact. This is an early survivor.
The materials are glass, with a wooden case. The base looks to be Ebony and the sliding door handle is some type of bone that I can’t mention.
Also please see the photos, the scale has a 1 and 2 side, they are both Hallmarked on the scale and the piece holding the cup plates.
Please see pictures for details and thanks for looking...
This item will be shipped with insurance, I will package this item with care!