FS: Ca. 2005 Tianjin Seagull ST-19 Chronograph – rare model with Chinese-only dial

I am the original owner of this Seagull ST-19, having bought it from Jeff Stanley when he began importing Tianjin chronographs from China around 2005 or 2006.
It has seen sporadic use over the years and is in very good condition. It keeps excellent time and works as it should.
I am selling because it needs a new home…it has spent more than the past decade largely idle in my safe.
 
This is a rare model, which I chose because it was my first purchase of a Chinese-made watch, and it has no English writing on the dial. Apparently the text is a 'motivational quote' from Chairman Mao—I do not recall the details. Please feel free to ask questions. Dimensions are roughly 42mm x 14mm. If you know this movement, you're aware it is a modified version of the Venus 175, a Swiss movement design which the Chinese acquired and produced in Tianjin for their Air Force ca. 1963.

I will ship the watch without straps; the NSA metal bracelet is NOT included in this sale, nor is it available.
Asking: $500, inclusive of ConUS shipping. Offers considered—no trades, please.
Paypal preferred, Venmo accepted; I’ll eat the fees.

Photos (click for larger):