I currently have the following for the Series 521 the $5 and $10 are Very tuff, I really havent arrived at this series but i do have the Tough ones in high grades.
What are the pink and blue dots that I see on the top and side margins of the face (mainly) of some of these notes? A security feature? A printing anomaly?
Yes they are a security feature, Unfortunatley they can be copied easily from Another note, heres an example:
mpcUSA, You seem to collect the way they say you should, the harder ones first. The fractionals are easy even in high grade but you get all the tough ones and in great grades for the bill too! Nice notes again!
From the information in the MPC book that I'm reading the dots are thicker than the paper and therefore serve as both a visual and tactile indication. Supposedly they are less valuable in this mode on notes that have received some wear. (Color copiers weren't much of threat when these notes were issued.)
In the book The Story of the American Bank Note Company, William H. Griffiths (1959) pp 52-54, in the section 'Planchette Paper Introduced 1891' it says:
Good point Art, The only thing is that the color planchets wear down Fairly quickly and even in a note of VF quality, The visual blue and pink Dots can be almost non existent.
Hey bob, The earliest MPC in the Series is the 461 issued on 9/16/46 And withdrawn on 3/10/47, I have some nice examples i will post In a little bit
Schwan considers the Series A AMC yen as the first MPC. The A yen notes were intially issued for a short time in Korea after WWII. This was to differentiate them from the B yen that was issued in the Japanese homeland. After the A yen were withdrawn from Korea, they were issued to US military personnel in Japan and could only be used in the US military installations. A yen could be converted to B yen but not the other way around. In other words, the A yen functioned the same as the later issues of MPC would. The success of the experimental use of A yen in this manner led directly to the introduction of MPC. The A yen was withdrawn from use when Series 461 MPC was introduced. The A yen is sometimes referred to as an experimental MPC series. In Europe, a coupon system was initially tried in Berlin. US personnel were issued coupons in addition to their regular pay which was paid in AMC marks. The coupons had a face vaue equivalent to the amount of pay received but were not legal tender themselves. In order to spend marks in the US military installations, US personnel had to present the coupons as well. This prevented US military personnel from spending more than the aggregate pay. This was designed to control blackmarketing by providing a control on the amount of money US personnel could spend or send home. They could spend all the marks they wanted on the German economy but were limited in what they could spend or send home by money order. In comparison to the A yen system, the coupon system was determined to be too cumbersome. The coupon system was stopped in Berlin when MPC was introduced. A similar coupon system was used in Vietnam for Korean and Thai personnel who could use US MPC. The US military in Europe after WWII also tried to use currency control books in which all pay and transactions were recorded in the books. This was also determined to be too cumbersome and ineffective. The currency control books are scarce with only a few known. None of the coupons used in Berlin are known to exist in collections or elsewhere. The only reason they are known to have been used is that they were described in articles in the European Stars and Stripes and other contemoporary military publications. The Korean and Thai MPC coupons are available but most are not cheap.