May selyo ito.

Here, may means has / there is.

In Filipino, may is commonly used to say that something possesses or contains something.

So:

• May selyo ito = This has a stamp / seal on it
• Literally, it is closer to There is a stamp on this or This has a stamp

A very useful pattern is:

• May + noun + pronoun/noun
• May pera siya = He/She has money
• May kotse kami = We have a car

So in your sentence:

• may = has / there is
• selyo = stamp / seal
• ito = this

Filipino often puts the predicate first. That is very normal.

So instead of starting with this, the sentence starts with the idea being asserted: has a stamp.

Structure:

• May selyo = has a stamp
• ito = this

So the whole sentence is literally arranged like:

• Has a stamp, this

That sounds strange in English, but it is natural in Filipino.

You can also say:

• Ito ay may selyo

This is also correct and may feel closer to English word order because it starts with ito (this). But May selyo ito is very natural and common.

Selyo can mean stamp or seal, depending on context.

Common meanings include:

• a postage stamp
• an official seal
• a stamped mark or impression

So May selyo ito could mean:

• This has a stamp
• This has a seal
• There is a stamp on this

The exact meaning depends on what ito refers to.
For example:

• If ito is a letter, selyo may mean postage stamp
• If ito is a document, selyo may mean official seal

Filipino does not use articles in the same way English does.

English usually needs something like:

• a stamp
• the stamp

But in Filipino, the noun can often appear without an article:

• selyo

Whether it means a stamp, the stamp, or just stamp depends on context.

So in May selyo ito, selyo is naturally untranslated as:

• a stamp
• a seal

depending on the situation.

This is very normal in Filipino and is something English speakers need to get used to.

Ito means this.

In this sentence, ito refers to the thing being talked about:

• May selyo ito = This has a stamp

It comes at the end because the sentence is predicate-first, which is a common Filipino sentence pattern.

Compare:

• May selyo ito = This has a stamp
• Ito ay may selyo = This has a stamp

Both are correct. The first one is simply using the more typical predicate-first structure.

Also note this important contrast:

• ito = this as a pronoun
• itong
  • noun = this + noun

For example:

• itong sobre = this envelope
• May selyo ito = This has a stamp

So ito here stands alone as this, not as a modifier before a noun.

Yes, often you can.

A common equivalent is:

• Mayroon itong selyo

This also means This has a stamp.

In many situations, may and mayroon are closely related, but may is shorter and very common in everyday speech.

For this sentence, these are all natural:

• May selyo ito
• Ito ay may selyo
• Mayroon itong selyo

However, the structures are slightly different:

• May selyo ito uses ito as a separate pronoun
• Mayroon itong selyo uses itong-type attachment in form, where ito connects to the following word

For a learner, the safest takeaway is:

• may = very common and simple
• mayroon = also correct, often a bit fuller in form

Yes, absolutely.

It is a full, natural sentence in Filipino.

Even though it is short, it contains everything needed:

• may = the existence/possession idea
• selyo = the thing possessed
• ito = the thing that has it

So it is just as complete as:

• May pera siya = He/She has money
• May problema kami = We have a problem

Short sentences like this are very common in Filipino.

A simple learner-friendly pronunciation is:

• may sel-yo ee-toh

A few notes:

• may sounds roughly like English my, but shorter and cleaner
• selyo has two syllables: sel-yo
• ito has three syllables: i-to is often heard as ee-toh

Approximate stress:

• MAY SEL-yo i-TO

But stress can vary slightly depending on speech rhythm.

Not normally.

Because of ito, the sentence means something like:

• This has a stamp
• There is a stamp on this

If you wanted to say There is a stamp here, you would more likely use dito (here), not ito (this).

Compare:

• May selyo ito = This has a stamp
• May selyo dito = There is a stamp here

So it is important not to confuse:

• ito = this
• dito = here

It is perfectly natural in everyday Filipino.

May selyo ito is short, direct, and normal in speech. It is not especially formal or especially slangy.

If you want a slightly fuller version, you could say:

• Ito ay may selyo
• Mayroon itong selyo

But the original sentence is already natural and correct.

A very useful pattern is:

• May + noun + pronoun/noun

This pattern expresses that someone or something has something.

Examples:

• May susi ako = I have a key
• May libro siya = He/She has a book
• May bata roon = There is a child there
• May selyo ito = This has a stamp

This is one of the most common and practical Filipino patterns, so this sentence is a very good model to remember.