MBH age

[Ballyhoo]

I just picked this up and am wondering if anyone can tell a more specific date of manufacture?  From the age guide it shows that the MBH was made from 1964 to 1980. 

[Fat Tony]

You'll need better picture of the wheels and bottom vents.

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[Ballyhoo]

You'll need better picture of the wheels and bottom vents.

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After I posted I figured that would help.  I 'll add those later.  Thanks for the help.

[PotsieWeber]

Also, whether the vents on the bottom are large tabs or small tabs might prove helpful.

[PotsieWeber]

To me, it looks like your top vent says Bar B Kettle over the rivet, which should put it '76 or earlier.  The question becomes is there the patent number on it, does it say patent pending, or is there no reference of a patent.  That would narrow things down a bit. 

I can't be sure, because the wheels are mostly in the shadows & the resolution isn't very high, but the wheels look like they have that seam that runs along the circumference through the center of the tread width.  So, likely the '73-76 wheels (which is kind of what I get the imprssion of when I enlarge the low resolution photo).

Better pic of the top vent &, depending on what is there, maybe whether the bottom vent has tabs like the top vent or tabs that are significantly larger & you'll get it pinned down fairly well.

[Mike in Roseville]

Small tabs...plastic wheels with plastic tread...73-75?


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[Ballyhoo]

The vent tabs are small for sure on both the top and bottom vents. 
I'll post some better pics later today.  Thanks so far.

[Ballyhoo]

additional pics.  Based on the damper it looks to be 1971-1975 I think.

[PotsieWeber]

The patent number on the top vent narrows it down to 73-75.  In 1975, the bowl vents were changed to large tabs, so that would appear to further narrow it down to 73-74.

[Bertl]

I agree with @PotsieWeber 73-74

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[Ballyhoo]

Thank you guys

[PotsieWeber]

No problem.  It is always an interesting to review the various clues to narrow things down.