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The Chalmers Motor Co. was an automobile manufactuer located in Detroit. The #3 pin is always located higher than pins #1 & #2 . It may have been done for flair to better represent the letter C. Chalmers Motor Company was eventually absorbed by Chrysler.
This control pattern has been found on 3 stamps with Mailometer type V perforations, The type V was only known to show up in a brief 2 week window in May/June 1911. This being the only usage on a machine equipped with a control mark die.
Thought is the Detroit office was using up some experimental sheet stock. These were most likely mixed in with the normal Schermack type III sheets prior to being made into coils. Very rare.
22
9
5-7
Unknown
0
23
9
5-8
NY
E. F. Houghton & Co.
1
Must have been reported on E.F. Houghton cover at one time? Test stamp with perfin shown in thumbnail, finger marks on RH side confirm it passed through Schermack machine.
24
9
6-8
Unknown
1
25
9
6-9
CHI
National Fire Insurance Co.
72
National Fire Insurance Co. operated out of Chicago and was one of the longer running companies using Schermack control perforations. Covers are known from 1910 until early 1913.
26
9
7-9
STL
Third National Bank
25
Thought is that prior to having a perforator in St. Louis, stamps with Schermack type III perforations were provided to St. Louis customers from Chicago. When St Louis received their own perforator, it had Mailometer type I perforations. Stamps with control pattern 7-9 are found on both types. Still need to get a better handle on the sequence of events but covers are scarce.
27
9
1-2-4
NY
A. Saks
7
Fashionable NY department store. Very scarce stamp missing from most collections.
28
9
1-2-7
Unknown
5
Very rare, user unknown.
29
9
1-3-4
NY
Smith Gray & Co.
29
Clothing retailer.
This pattern is a broken pin pattern of Smith Gray & Co's original control pattern 3. The last known control pattern 3 was recorded on cover 6/1/1910. The first known control pattern 134 was recorded on cover 7/1/1910. Most likely the 1 & 4 pin didn't break at the same time. The thought is that the 1 pin broke first, thus stamps perforated as 13 would have been assumed to have come from the Cosmopolitan Magazine's machine. Covers are unknown, this is only theory.
30
9
1-3-6
Unknown
1
344/384 sold in a Perfins Club auction 9/1979. Whereabouts unknown. Possible broken pin version of pattern 36 ?
