Yes. Really. The handwriting on the original money order was examined by numerous experts in handwriting identification. They all stated definitively that it was Oswald's. There were no qualified or conditional opinions from any of them on it.
From the Report-----
https://www.archives.gov/research/jfk/warren-commission-report/chapter-4.html#ownership Document examiners for the Treasury Department and the FBI testified unequivocally that the bold printing on the face of the mail-order coupon was in the handprinting of Lee Harvey Oswald and that the writing on the envelope was also his.....The post office box to which the rifle was shipped was rented to "Lee H. Oswald" from October 9, 1962, to May 14, 1963.14 Experts on handwriting identification from the Treasury Department......
A reminder of a previous post-----
I don't accept the word of an unnamed source.
OK...
two 'document examiners' testified before the Commission.
Not exactly a vast team of analysts there.
NOTE--
Mr. McCLOY. Commission Exhibit 776 is a series of checks which have been endorsed by Oswald, some in lead pencil and some in ink. Some of those endorsements seem to be, rather the handwriting seems to be, very irregular, loose, malformed, certain other ones very clear and quite regular, and in comparison with other standards of Oswald's I find some difficulty in **conforming [sic] the signatures on certain of these endorsements to those standards. I wonder if you would look at these and tell me whether you have any comments in regard to the comments I have made about this--about these checks? The first two or three there seem to exemplify what I am talking about.
Mr. COLE. In my opinion the endorsements on these checks show a moderately wide range of writing habit, and they also show variations which may be due to an attitude about the act of writing, and I am thinking especially of the more distorted signatures, such as that appearing on No. 2408; and by attitude I mean that a person might find the act of writing very inconvenient or distasteful or might actually be experiencing some strong emotion at the particular time.
** Probably meant 'confirming'.
As usual..If something seems to support the conclusions of the Report--It is revered.
If it contradicts the conclusions---It is summarily rejected.