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                            September 6, 2023

       Rick Gaenzle
       Chief Executive Officer
       Perception Capital Corp. II
       315 Lake Street East, Suite 301
       Wayzata, MN 55391

                                                        Re: Perception Capital
Corp. II
                                                            Amendment No. 2 to
Registration Statement on Form F-4
                                                            Filed August 24,
2023
                                                            File No. 333-272880

       Dear Rick Gaenzle:

             We have reviewed your amended registration statement and have the
following
       comments. In some of our comments, we may ask you to provide us with
information so we
       may better understand your disclosure.

              Please respond to this letter by amending your registration
statement and providing the
       requested information. If you do not believe our comments apply to your
facts and
       circumstances or do not believe an amendment is appropriate, please tell
us why in your
       response.

              After reviewing any amendment to your registration statement and
the information you
       provide in response to these comments, we may have additional comments.
Unless we note
       otherwise, our references to prior comments are to comments in our
August 10, 2023 letter.

       Amendment No. 2 to the Registration Statement on Form S-4

       Summary
       Certain Engagements in Connection with the Business Combination and
Related Transactions,
       page 11

   1.                                                   We note your response
to comment 1 and reissue the comment in
                                                        part. Please disclose
how this waiver was obtained and why the waiver was agreed to.
 Rick Gaenzle
FirstName
Perception LastNameRick
           Capital Corp. IIGaenzle
Comapany 6,
September  NamePerception
              2023          Capital Corp. II
September
Page 2     6, 2023 Page 2
FirstName LastName
Risk Factors
Moelis and Nomura, two of the IPO Underwriters, have gratuitously waived their
right to
deferred payment for services rendered in connection, page 65

2.       We note your response to comment 4 and reissue the comment in part.
Clarify the impact
         of such a fee waiver on the evaluation of the business combination.
Proposal No. 3 - The Organizational Documents Proposal, page 107

3.       We note your response to comment 8 and your revised disclosure
throughout the
         prospectus, including here, where you state that "[t]he Proposed
Organizational
         documents authorize 620,000,000 shares, consisting of 600,000,000
shares of NewCo
         Common Stock and 20,000,000 shares of NewCo Preferred Stock." We note,
however,
         that on page F-1 of Annex F, which is the Form of Certificate of
Incorporation of
         Spectaire Holdings Inc. to become effective upon the completion of the
Domestication,
         the number of shares to be authorized remains blank. Please revise the
Form of Certificate
         of Incorporation of Spectaire Holdings Inc. to also disclose the
number of shares of
         NewCo Common Stock and NewCo Preferred Stock that will be authorized.
U.S. Federal Income Tax Considerations to Holders of PCCT Class A Ordinary
Shares and
Public Warrants, page 232

4.       We note your response to comment 6 and reissue in part. Please also
add risk factor and/or
         other appropriate disclosure setting forth the risks of uncertain tax
treatment to investors,
         including with respect to U.S. holders of PCCT Class A Ordinary Shares
exercising their
         redemption rights and with respect to whether the Merger qualifies as
a "reorganization"
         within the meaning of Section 368(a) of the Code, both of which appear
to be subject to
         uncertainty.
        You may contact Nudrat Salik at 202-551-3692 or Al Pavot at
202-551-3738 if you have
questions regarding comments on the financial statements and related matters.
Please contact
Jessica Ansart at 202-551-4511 or Jane Park at 202-551-7439 with any other
questions.



                                                               Sincerely,

                                                               Division of
Corporation Finance
                                                               Office of
Industrial Applications and
                                                               Services
cc:      Michael Mies, Esq.