I think one would have to assume that because he moved around in Germany as well as working as a military armorer, he likely would have been exposed to a fairly wide variety of arms. Maybe I'm mistaken in that assumption, but using Valentine Beck's lebenslauf as an example, just in his (Beck's) time as a journeyman alone, he sure got around. Albrecht's life story also indicates a lot of restlessness. And what would he have seen just in the nature of repair work working in the Bethlehem locksmith shop? Apparently not so much in the way of NH county *white* customers, but what exactly would the natives have been bringing in for work and/or repair?
It's also unfortunate that we actually know very little about customer expectation and how that expectation may or may not have affected the work of the gun stocker. His only signed gun is always assumed to have been made following his move to Lititz as way of explanation for the overtly "Lancaster" appearance. If so, was this due to a regional expectation, or simply a customer expectation? And, we view the 'Lititz' rifle as a somewhat drastic change, but it's only a change viewed through the lens of our assumptions because we're attributing the Lion/Lamb, the two-tailed dog and/or the Marshall rifle to him. But those are just attributions almost solely made via an association with Oerter's later signed work, so do these attributions also color how we view #19 and the shorty?
I guess what I'm saying is, would a customer have been in a position to dictate stock style? Would there have been accepted terminology to indicate "I want a straight stock" or "I want a French stock" or "I want a stepped stock?" I'm thinking about this lately because in viewing #42, I have to wonder if it may not be as early as we think it is, and if for example it was contemporaneous with Oerter's signed work of the mid 1770s, well, you can see a fairly dramatic contrast in stock architecture - for so long, we've viewed this as a lineal progression, but what if there simply is no progression but rather branches? So what if the customer for #42 wanted an "old fashioned" step stock from a gunstocker who had moved on to straighter stocks? What if #19 was built for someone who wanted a French-style stock? Is the gunstocker going to say no?