Writing conditional statement based on attribute

I am trying to write a conditional statement based on an attribute:

The XML doc will have either @level=series, subseries, file, item, or no
attribute.

I would like the output to be in <p> with default font where
@level="series" | @level="subseries"

and  <font size="-1" color="gray"> where there is file, item or no level
attribute. In other words anything but series or subseries.

Here are two examples of XML:

scopecontent is the element i am trying to format. parent element is dsc.

<c01 level="series">
<did>
<container type="folder" label="Folder"> 15</container>
<unittitle><unitdate>1932</unitdate></unittitle>
</did>
<scopecontent>
<p> Includes letters regarding Lee Strasberg's health. </p>
</scopecontent>


<c04>
<did>
<container type="folder" label="Folder"> 15</container>
<unittitle><unitdate>1932</unitdate></unittitle>
</did>
<scopecontent>
<p> Includes letters regarding Lee Strasberg's health. </p>
</scopecontent>
</c04>

I tried the following with no luck:

<xsl:template match='dsc//scopecontent'>
<xsl:choose>
      <xsl:when test='* [@level="series"] |
                  * [@level="subseries"]'>
            <p>
                  <xsl:apply-templates/>
            </p>

      </xsl:when>
      <xsl:otherwise>
            <font size="-1" color="gray">
            <xsl:apply-templates/>
            </font>
      </xsl:otherwise>
</xsl:choose>
</xsl:template>

Also:

<xsl:template match='* [@level="series"]//scopecontent |
             * [@level="subseries"]//scopecontent'>
      <p>
      <xsl:apply-templates/>
      </p>
</xsl:template>

<xsl:template match='* [not (@level="series")]//scopecontent |
             * [not (@level="subseries")]//scopecontent'>
      <font size="-1" color="gray">
      <xsl:apply-templates/>
      </font>
</xsl:template>

Thanks for the help.
Lynn