The 13000 number sounds accurate enough to use as a general production number to date....but consider that I have seen the new SR22 pistol serial numbers up to 16xxx already and that puts the low volume production of the SR1911 into some perspective.
BTW, I ordered three (3) SR1911's the day the gun was announced from three different LGS's in my area, I received one within a few weeks, one a few months later and I am still waiting for the third LGS to call....I would have bet that the LGS that has NOT filled my order as of yet would have been the first store to fill my order.....go figure.
I have decided that I am going to buy as many as I can prior to the price increase which I believe has to be coming.....Just my humble opinion of course.