Acme Synchro Shutter Flash - No Setting

[alt.kafka]

I have an Acme No. 3 Synchro Shutter without the flash speed setting or flash cocking lever. There's a piece of brass under the holes where these would be. However, it does have a bi-post connector, which reliably triggers the flash when the shutter trips.

Would this be a factory configuration, or would the flash sync have been added later? What is the sync delay? Would it be X?

[Jim Noel]

If the shutter trips when the shutter is wide open it is OK. This likely is a shutter which had no X-synch, and it has been added with the bi-post connector, which in my estimation may have been the best ever devised, Very dependable and large enough to not be so likely to be damaged.