Lionel PW SP smoke bottle questions

I do not think the brown glass bottles came first. I think the square bottles with black lettering printed directly on the glass came before them.

The 1947 catalog has this bottle pictured on page 37.

Browsing through the catalogs, they used the same picture or no picture at all, through 1955. So I guess we really cannot go by the catalog picture. 

Thanks for the response C.W.  I went through the catalogs, regular and advance, as well. Actually hat would be the '49 catalog. The '47 shows a generic bottle..The '48 shows a blue label , the '50 reverts to the clear label. Think, like some of the rolling stock, they use generic pix.   The brown one a much tougher find so where and when with that variation??  You would think this an easy answer but it's nowhere to be found. I'm trying to place the CORRECT bottles w/tampers alongside the proper steamers on shelve display. The period between '47 and approx..52, 53 has me most curious. When did blue label bottles  give way to orange? Guess set provenance and those org. Owners the only way to know for sure. A few months back, a guy was selling a LN boxed '48 2026 online and he had an orange labeled bottle with it. Clearly an add on-which had me thinking, clear bottle or blue label  and so on.................... well, won't lose sleep over it..

The round bottle is shown in the 1970 Lionel / MPC catalog. My buddy and I, have decided that the round bottles are late post war / early MPC (likely using Postwar left-overs). Then MPC used plastic pill containers with round blue labels that covered the entire lid.
The round bottle has an orange label. I think that probably means that the orange labeled bottles came after the blue labeled ones.

I have both the round bottle and the square bottle on cards (blister packs). I think the round bottle is MPC. The square one is postwar, I do not know the label color.