Interesting that it has a steel boiler, Ken does not mention that in his book, but not terribly surprising that Weeden may have made a few that way.
Is there any evidence of it ever having feet attached to the base like the No.45's, looks to me like a No.7 with a smoke stack added. Can't remember if the steam line had an elbow or just had a bend in it on the one I had.
What I do remember was how flimsy it was.
Thanks Frank & Nick - I agree its a #7. That was mistake not seeing the #7 at first.
One can't ever be sure with a engine of this age but the steam line
seems original, the paint sure does match for Weeden's "brass/golden" color. I believe I have seen that shape of an "elbow" on other Weeden engines. Then we have the red-ish paint on the upper fittings, which seems to match. The stack does seem a bit off (over lapping at the bottom seat) and then the color seems a bit off and with a run too. Though it doesn't look bad on the engine. It does have a seam, which is pretty normal for a Weeden stack.
@Nick thank you for those photos, I had one question in my mind if that PV was a twist off.